diff --git a/.gitignore b/.gitignore
index a76e9d47d..9f25704b1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,8 +25,6 @@
 # Ignore local database settings
 /config/database.yml
 
-Gemfile.lock
-
 # Ignore mac stuff
 .DS_Store
 
diff --git a/.rubocop.yml b/.rubocop.yml
index 2b6e174b9..35e39b606 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -196,3 +196,7 @@ Style/Documentation:
 
 Lint/UselessAssignment:
   Enabled: false
+
+Style/ExtraSpacing:
+  Description: 'Do not use unnecessary spacing.'
+  Enabled: false
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 000000000..3986f0b50
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,314 @@
+GEM
+  remote: http://rubygems.org/
+  specs:
+    actionmailer (4.1.10)
+      actionpack (= 4.1.10)
+      actionview (= 4.1.10)
+      mail (~> 2.5, >= 2.5.4)
+    actionpack (4.1.10)
+      actionview (= 4.1.10)
+      activesupport (= 4.1.10)
+      rack (~> 1.5.2)
+      rack-test (~> 0.6.2)
+    actionview (4.1.10)
+      activesupport (= 4.1.10)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+    activemodel (4.1.10)
+      activesupport (= 4.1.10)
+      builder (~> 3.1)
+    activerecord (4.1.10)
+      activemodel (= 4.1.10)
+      activesupport (= 4.1.10)
+      arel (~> 5.0.0)
+    activerecord-session_store (0.1.1)
+      actionpack (>= 4.0.0, < 5)
+      activerecord (>= 4.0.0, < 5)
+      railties (>= 4.0.0, < 5)
+    activesupport (4.1.10)
+      i18n (~> 0.6, >= 0.6.9)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.1)
+      tzinfo (~> 1.1)
+    addressable (2.3.8)
+    arel (5.0.1.20140414130214)
+    ast (2.1.0)
+    astrolabe (1.3.1)
+      parser (~> 2.2)
+    autoprefixer-rails (5.2.1.2)
+      execjs
+      json
+    browser (0.9.1)
+    buftok (0.2.0)
+    builder (3.2.2)
+    childprocess (0.5.6)
+      ffi (~> 1.0, >= 1.0.11)
+    coderay (1.1.0)
+    coffee-rails (4.1.0)
+      coffee-script (>= 2.2.0)
+      railties (>= 4.0.0, < 5.0)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.9.1.1)
+    daemons (1.2.3)
+    delayed_job (4.0.6)
+      activesupport (>= 3.0, < 5.0)
+    delayed_job_active_record (4.0.3)
+      activerecord (>= 3.0, < 5.0)
+      delayed_job (>= 3.0, < 4.1)
+    docile (1.1.5)
+    eco (1.0.0)
+      coffee-script
+      eco-source
+      execjs
+    eco-source (1.1.0.rc.1)
+    em-websocket (0.5.1)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    equalizer (0.0.11)
+    erubis (2.7.0)
+    eventmachine (1.0.8)
+    execjs (2.6.0)
+    faraday (0.9.1)
+      multipart-post (>= 1.2, < 3)
+    ffi (1.9.10)
+    formatador (0.2.5)
+    guard (2.13.0)
+      formatador (>= 0.2.4)
+      listen (>= 2.7, <= 4.0)
+      lumberjack (~> 1.0)
+      nenv (~> 0.1)
+      notiffany (~> 0.0)
+      pry (>= 0.9.12)
+      shellany (~> 0.0)
+      thor (>= 0.18.1)
+    guard-livereload (2.4.0)
+      em-websocket (~> 0.5)
+      guard (~> 2.8)
+      multi_json (~> 1.8)
+    hashie (3.4.2)
+    hike (1.2.3)
+    http (0.6.4)
+      http_parser.rb (~> 0.6.0)
+    http_parser.rb (0.6.0)
+    i18n (0.7.0)
+    icalendar (2.3.0)
+    json (1.8.3)
+    jwt (1.5.1)
+    koala (2.2.0)
+      addressable
+      faraday
+      multi_json
+    libv8 (3.16.14.11)
+    listen (3.0.3)
+      rb-fsevent (>= 0.9.3)
+      rb-inotify (>= 0.9)
+    lumberjack (1.0.9)
+    mail (2.5.4)
+      mime-types (~> 1.16)
+      treetop (~> 1.4.8)
+    memoizable (0.4.2)
+      thread_safe (~> 0.3, >= 0.3.1)
+    method_source (0.8.2)
+    mime-types (1.25.1)
+    minitest (5.8.0)
+    multi_json (1.11.2)
+    multi_xml (0.5.5)
+    multipart-post (2.0.0)
+    mysql2 (0.3.19)
+    naught (1.0.0)
+    nenv (0.2.0)
+    net-ldap (0.11)
+    notiffany (0.0.7)
+      nenv (~> 0.1)
+      shellany (~> 0.0)
+    oauth (0.4.7)
+    oauth2 (1.0.0)
+      faraday (>= 0.8, < 0.10)
+      jwt (~> 1.0)
+      multi_json (~> 1.3)
+      multi_xml (~> 0.5)
+      rack (~> 1.2)
+    omniauth (1.2.2)
+      hashie (>= 1.2, < 4)
+      rack (~> 1.0)
+    omniauth-facebook (2.0.1)
+      omniauth-oauth2 (~> 1.2)
+    omniauth-google-oauth2 (0.2.6)
+      omniauth (> 1.0)
+      omniauth-oauth2 (~> 1.1)
+    omniauth-linkedin (0.2.0)
+      omniauth-oauth (~> 1.0)
+    omniauth-oauth (1.1.0)
+      oauth
+      omniauth (~> 1.0)
+    omniauth-oauth2 (1.3.1)
+      oauth2 (~> 1.0)
+      omniauth (~> 1.2)
+    omniauth-twitter (1.2.1)
+      json (~> 1.3)
+      omniauth-oauth (~> 1.1)
+    parser (2.2.2.6)
+      ast (>= 1.1, < 3.0)
+    polyglot (0.3.5)
+    power_assert (0.2.4)
+    powerpack (0.1.1)
+    pry (0.10.1)
+      coderay (~> 1.1.0)
+      method_source (~> 0.8.1)
+      slop (~> 3.4)
+    puma (2.13.4)
+    rack (1.5.5)
+    rack-livereload (0.3.16)
+      rack
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (4.1.10)
+      actionmailer (= 4.1.10)
+      actionpack (= 4.1.10)
+      actionview (= 4.1.10)
+      activemodel (= 4.1.10)
+      activerecord (= 4.1.10)
+      activesupport (= 4.1.10)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.1.10)
+      sprockets-rails (~> 2.0)
+    rails-observers (0.1.2)
+      activemodel (~> 4.0)
+    railties (4.1.10)
+      actionpack (= 4.1.10)
+      activesupport (= 4.1.10)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rainbow (2.0.0)
+    rake (10.4.2)
+    rb-fsevent (0.9.5)
+    rb-inotify (0.9.5)
+      ffi (>= 0.5.0)
+    ref (2.0.0)
+    rubocop (0.33.0)
+      astrolabe (~> 1.3)
+      parser (>= 2.2.2.5, < 3.0)
+      powerpack (~> 0.1)
+      rainbow (>= 1.99.1, < 3.0)
+      ruby-progressbar (~> 1.4)
+    ruby-progressbar (1.7.5)
+    rubyzip (1.1.7)
+    sass (3.4.16)
+    sass-rails (5.0.3)
+      railties (>= 4.0.0, < 5.0)
+      sass (~> 3.1)
+      sprockets (>= 2.8, < 4.0)
+      sprockets-rails (>= 2.0, < 4.0)
+      tilt (~> 1.1)
+    selenium-webdriver (2.47.1)
+      childprocess (~> 0.5)
+      multi_json (~> 1.0)
+      rubyzip (~> 1.0)
+      websocket (~> 1.0)
+    shellany (0.0.1)
+    simple-rss (1.3.1)
+    simple_oauth (0.3.1)
+    simplecov (0.10.0)
+      docile (~> 1.1.0)
+      json (~> 1.8)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.0)
+    simplecov-rcov (0.2.3)
+      simplecov (>= 0.4.1)
+    slop (3.6.0)
+    spring (1.3.6)
+    sprockets (2.12.4)
+      hike (~> 1.2)
+      multi_json (~> 1.0)
+      rack (~> 1.0)
+      tilt (~> 1.1, != 1.3.0)
+    sprockets-rails (2.3.2)
+      actionpack (>= 3.0)
+      activesupport (>= 3.0)
+      sprockets (>= 2.8, < 4.0)
+    sqlite3 (1.3.10)
+    test-unit (3.1.3)
+      power_assert
+    therubyracer (0.12.2)
+      libv8 (~> 3.16.14.0)
+      ref
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    tilt (1.4.1)
+    treetop (1.4.15)
+      polyglot
+      polyglot (>= 0.3.1)
+    twitter (5.13.0)
+      addressable (~> 2.3)
+      buftok (~> 0.2.0)
+      equalizer (~> 0.0.9)
+      faraday (~> 0.9.0)
+      http (~> 0.6.0)
+      http_parser.rb (~> 0.6.0)
+      json (~> 1.8)
+      memoizable (~> 0.4.0)
+      naught (~> 1.0)
+      simple_oauth (~> 0.3.0)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    uglifier (2.7.1)
+      execjs (>= 0.3.0)
+      json (>= 1.8.0)
+    websocket (1.2.2)
+    writeexcel (1.0.5)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activerecord-session_store
+  autoprefixer-rails (>= 5.2)
+  browser
+  coffee-rails
+  coffee-script-source
+  daemons
+  delayed_job_active_record
+  eco
+  em-websocket
+  eventmachine
+  execjs
+  guard (>= 2.2.2)
+  guard-livereload
+  icalendar
+  json
+  koala
+  libv8
+  mail (~> 2.5.0)
+  mime-types
+  mysql2
+  net-ldap
+  omniauth
+  omniauth-facebook
+  omniauth-google-oauth2
+  omniauth-linkedin
+  omniauth-twitter
+  puma
+  rack-livereload
+  rails (= 4.1.10)
+  rails-observers
+  rb-fsevent
+  rubocop
+  sass-rails
+  selenium-webdriver
+  simple-rss
+  simplecov
+  simplecov-rcov
+  spring
+  sprockets (~> 2.0)
+  sqlite3
+  test-unit
+  therubyracer
+  twitter (~> 5.13.0)
+  uglifier
+  writeexcel
+
+BUNDLED WITH
+   1.10.5
diff --git a/app/controllers/search_controller.rb b/app/controllers/search_controller.rb
index 0fa3af35c..25946bf47 100644
--- a/app/controllers/search_controller.rb
+++ b/app/controllers/search_controller.rb
@@ -34,7 +34,7 @@ class SearchController < ApplicationController
       next if !preferences
       objects_in_order_hash[preferences[:prio]] = object
     }
-    objects_in_order_hash.keys.sort.reverse.each {|prio|
+    objects_in_order_hash.keys.sort.reverse_each {|prio|
       objects_in_order.push objects_in_order_hash[prio]
     }
 
diff --git a/app/models/organization/search.rb b/app/models/organization/search.rb
index 1eb8448a1..ec008f731 100644
--- a/app/models/organization/search.rb
+++ b/app/models/organization/search.rb
@@ -68,7 +68,7 @@ returns
 
       # fallback do sql query
       # - stip out * we already search for *query* -
-      query.gsub! '*', ''
+      query.delete! '*', ''
       organizations = Organization.where(
         'name LIKE ? OR note LIKE ?', "%#{query}%", "%#{query}%"
       ).order('name').limit(limit)
diff --git a/app/models/ticket/search.rb b/app/models/ticket/search.rb
index 4087738f3..955743154 100644
--- a/app/models/ticket/search.rb
+++ b/app/models/ticket/search.rb
@@ -146,7 +146,7 @@ returns
     # do query
     # - stip out * we already search for *query* -
     if query
-      query.gsub! '*', ''
+      query.delete! '*', ''
       tickets_all = Ticket.select('DISTINCT(tickets.id)')
                     .where(access_condition)
                     .where( '( `tickets`.`title` LIKE ? OR `tickets`.`number` LIKE ? OR `ticket_articles`.`body` LIKE ? OR `ticket_articles`.`from` LIKE ? OR `ticket_articles`.`to` LIKE ? OR `ticket_articles`.`subject` LIKE ?)', "%#{query}%", "%#{query}%", "%#{query}%", "%#{query}%", "%#{query}%", "%#{query}%" )
diff --git a/app/models/user/search.rb b/app/models/user/search.rb
index 54db73abe..59f2a6bc6 100644
--- a/app/models/user/search.rb
+++ b/app/models/user/search.rb
@@ -68,7 +68,7 @@ returns
 
       # fallback do sql query
       # - stip out * we already search for *query* -
-      query.gsub! '*', ''
+      query.delete! '*', ''
       if params[:role_ids]
         users = User.joins(:roles).where( 'roles.id' => params[:role_ids] ).where(
           '(users.firstname LIKE ? or users.lastname LIKE ? or users.email LIKE ?) AND users.id != 1', "%#{query}%", "%#{query}%", "%#{query}%",
diff --git a/app/models/user_device.rb b/app/models/user_device.rb
index 858d7813e..094597c17 100644
--- a/app/models/user_device.rb
+++ b/app/models/user_device.rb
@@ -46,7 +46,7 @@ store device for user
     end
 
     # get browser details
-    browser = Browser.new(:ua => user_agent, :accept_language => 'en-us')
+    browser = Browser.new(ua: user_agent, accept_language: 'en-us')
     browser = {
       plattform: browser.platform.to_s.camelize,
       name: browser.name,
@@ -73,7 +73,7 @@ store device for user
     end
 
     # check if exists
-    user_device = self.find_by(
+    user_device = find_by(
       user_id: user_id,
       os: browser[:plattform],
       browser: browser[:name],
@@ -85,7 +85,7 @@ store device for user
     end
 
     # create new device
-    user_device = self.create(
+    user_device = create(
       user_id: user_id,
       name: name,
       os: browser[:plattform],
@@ -120,7 +120,7 @@ log user device action
 
 =end
 
-  def self.action(user_device_id, user_agent, ip, user_id)
+  def self.action(user_device_id, _user_agent, ip, _user_id)
     user_device = UserDevice.find(user_device_id)
 
     # update location if needed
diff --git a/config/database.yml.dist b/config/database.yml.dist
index a86d68e41..70dc993dc 100644
--- a/config/database.yml.dist
+++ b/config/database.yml.dist
@@ -21,14 +21,13 @@ development:
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
-# SQLite version 3.x
-#   gem install sqlite3
-#
-#   Ensure the SQLite 3 gem is defined in your Gemfile
-#   gem 'sqlite3'
 test:
-  adapter: sqlite3
-  database: db/test.sqlite3
-  timeout: 5000
+  adapter: mysql2
+  database: zammad_test
   pool: 50
+  timeout: 5000
+  encoding: utf8
+  username: some_user
+  password: some_pass
+  host: 127.0.0.1
 
diff --git a/lib/calendar_subscriptions/tickets.rb b/lib/calendar_subscriptions/tickets.rb
index fe0d70fb6..ec74342d8 100644
--- a/lib/calendar_subscriptions/tickets.rb
+++ b/lib/calendar_subscriptions/tickets.rb
@@ -120,10 +120,8 @@ class CalendarSubscriptions::Tickets
 
       translated_state = Translation.translate(user_locale, ticket.state.name)
 
-      # rubocop:disable Rails/TimeZone
       event_data[:dtstart]     = Icalendar::Values::DateTime.new( pending_time )
       event_data[:dtend]       = Icalendar::Values::DateTime.new( pending_time )
-      # rubocop:enable Rails/TimeZone
       event_data[:summary]     = "#{translated_state} #{translated_ticket}: '#{ticket.title}'"
       event_data[:description] = "T##{ticket.number}"
 
@@ -162,10 +160,8 @@ class CalendarSubscriptions::Tickets
         escalation_time = Time.zone.today
       end
 
-      # rubocop:disable Rails/TimeZone
       event_data[:dtstart]     = Icalendar::Values::DateTime.new( escalation_time )
       event_data[:dtend]       = Icalendar::Values::DateTime.new( escalation_time )
-      # rubocop:enable Rails/TimeZone
       event_data[:summary]     = "#{translated_ticket_escalation}: '#{ticket.title}'"
       event_data[:description] = "T##{ticket.number}"
 
diff --git a/lib/models.rb b/lib/models.rb
index c798a9aaa..ea73526a1 100644
--- a/lib/models.rb
+++ b/lib/models.rb
@@ -64,7 +64,7 @@ returns
 
   def self.searchable
     models = []
-    all.each {|model_class, options|
+    all.each {|model_class, _options|
       next if !model_class
       next if !model_class.respond_to? :search_preferences
       models.push model_class
diff --git a/lib/sessions.rb b/lib/sessions.rb
index b0d38a3af..edc421a57 100644
--- a/lib/sessions.rb
+++ b/lib/sessions.rb
@@ -1,5 +1,3 @@
-# rubocop:disable Rails/TimeZone
-
 require 'json'
 require 'session_helper'
 
diff --git a/lib/sessions/backend/collections/base.rb b/lib/sessions/backend/collections/base.rb
index 187ff0269..41dd5d2dc 100644
--- a/lib/sessions/backend/collections/base.rb
+++ b/lib/sessions/backend/collections/base.rb
@@ -1,7 +1,7 @@
 class Sessions::Backend::Collections::Base
   class << self; attr_accessor :model, :roles, :not_roles end
 
-  def initialize( user, client = nil, client_id = nil, ttl )
+  def initialize( user, client, client_id, ttl )
     @user        = user
     @client      = client
     @client_id   = client_id
diff --git a/lib/time_calculation.rb b/lib/time_calculation.rb
index 5c99190a2..e563a05e2 100644
--- a/lib/time_calculation.rb
+++ b/lib/time_calculation.rb
@@ -23,10 +23,10 @@ put working hours matrix and timezone in function, returns UTC working hours mat
     if timezone
       begin
         time_diff = Time.zone.parse(start_time.to_s).in_time_zone(timezone).utc_offset
-     rescue => e
-       Rails.logger.error "Can't fine tomezone #{timezone}"
-       Rails.logger.error e.inspect
-       Rails.logger.error e.backtrace
+      rescue => e
+        Rails.logger.error "Can't fine tomezone #{timezone}"
+        Rails.logger.error e.inspect
+        Rails.logger.error e.backtrace
       end
     end
     beginning_of_workday = Time.zone.parse("1977-10-27 #{config['beginning_of_workday']}")
diff --git a/lib/user_agent.rb b/lib/user_agent.rb
index ba091cca8..40095986e 100644
--- a/lib/user_agent.rb
+++ b/lib/user_agent.rb
@@ -402,7 +402,8 @@ returns
     end
 
     def success?
-      @success
+      return true if @success
+      false
     end
   end
 end
diff --git a/script/websocket-server.rb b/script/websocket-server.rb
index c2b3184b8..46d69399a 100755
--- a/script/websocket-server.rb
+++ b/script/websocket-server.rb
@@ -1,6 +1,5 @@
 #!/usr/bin/env ruby
 # Copyright (C) 2012-2013 Zammad Foundation, http://zammad-foundation.org/
-# rubocop:disable Rails/TimeZone
 
 $LOAD_PATH << './lib'
 require 'rubygems'
diff --git a/test/controllers/search_controller_test.rb b/test/controllers/search_controller_test.rb
index 760241ae4..ebe6e18b8 100644
--- a/test/controllers/search_controller_test.rb
+++ b/test/controllers/search_controller_test.rb
@@ -452,5 +452,4 @@ class SearchControllerTest < ActionDispatch::IntegrationTest
 
   end
 
-
 end
diff --git a/test/unit/user_device_test.rb b/test/unit/user_device_test.rb
index 7dcc758de..33975e783 100644
--- a/test/unit/user_device_test.rb
+++ b/test/unit/user_device_test.rb
@@ -21,7 +21,6 @@ class UserDeviceTest < ActiveSupport::TestCase
     )
   end
 
-
   test 'session test' do
 
     # signin with fingerprint A from country A via session -> new device #1
@@ -198,5 +197,4 @@ class UserDeviceTest < ActiveSupport::TestCase
 
   end
 
-
 end