Added timesheet-calendar view (#236)

assets/css/calendar.scss

@@ -0,0 +1,7 @@
+.popover-content {
+    .calendar-entry {
+        ul {
+            padding: 0 0 0 10px;
+        }
+    }
+}

assets/js/app.js

@@ -2,6 +2,12 @@ require('../../vendor/kevinpapst/adminlte-bundle/Resources/assets/admin-lte');
 
 require('../css/app.scss');
 require('../css/datatable.scss');
+require('../css/calendar.scss');
+
+require('fullcalendar');
+require('fullcalendar/dist/gcal.min');
+require('fullcalendar/dist/locale-all');
+require('fullcalendar/dist/fullcalendar.min.css');
 
 // ------ Kimai itself ------
 require('./kimai.js');