truncate business hours day name

app/assets/javascripts/app/lib/app_post/business_hours.coffee

@@ -1,6 +1,6 @@
 class App.BusinessHours extends Spine.Controller
 
-  className: 'settings-list settings-list--stretch settings-list--toggleColumn'
+  className: 'settings-list settings-list--fixed settings-list--stretch settings-list--toggleColumn'
   tag: 'table'
 
   events:

app/assets/javascripts/app/views/generic/business_hours.jst.eco

@@ -2,7 +2,7 @@
   <tr>
     <% for id, day of @days: %>
     <th style="text-align: center">
-      <label class="day-name">
+      <label class="day-name u-textTruncate">
         <span class="checkbox-replacement checkbox-replacement--inline">
           <input class="js-toggle-day" name="<%= @attribute.name %>::<%- id %>::active" value="true" data-target="<%- id %>" type="checkbox"<%- ' checked' if @hours[id].active %>>
           <%- @Icon('checkbox', 'icon-unchecked') %>

app/assets/stylesheets/zammad.scss

@@ -5963,6 +5963,10 @@ output {
       0 0 0 4px hsl(0,90%,70%);
   }
 
+  &.settings-list--fixed {
+    table-layout: fixed;
+  }
+  
   &.settings-list--stretch {
     width: 100%;
   }