[#6574] Associate LaborBudgets with TimeEntryActivities

assets/stylesheets/redmine_contracts.css

@@ -26,6 +26,7 @@ html>body .tabular li {overflow:hidden;}
 .tabular li.hidden { height: 0; padding: 0; margin: 0; }
 /* End tabular */
 
+.hidden { display: none; }
 a.contract-delete {color: red; }
 .overage { color: #A40000; }