Maintenance: Redo column allow signup with reset column information to make the migration work. Removed old migration because of missing column information reset there was a quite crash.

db/migrate/20201112000000_role_signup_column_fix.rb

@@ -1,10 +1,14 @@
-class RoleSignupColumn < ActiveRecord::Migration[5.2]
+class RoleSignupColumnFix < ActiveRecord::Migration[5.2]
   def change
 
     # return if it's a new setup
     return if !Setting.exists?(name: 'system_init_done')
 
+    if !column_exists?(:permissions, :allow_signup)
       add_column :permissions, :allow_signup, :boolean, null: false, default: false
+    end
+
+    Permission.reset_column_information
 
     signup_permissions = [
       'user_preferences',

spec/db/migrate/role_signup_column_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-RSpec.describe RoleSignupColumn, type: :db_migration, db_strategy: :reset do
+RSpec.describe RoleSignupColumnFix, type: :db_migration, db_strategy: :reset do
   context 'when a role contains signup permissions' do
     let!(:role) do
       role = create(:role)