added freelancer invoice template (#254)

assets/js/app.js

@@ -1,19 +0,0 @@
-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');
-
-// ------ for charts ------
-require('chart.js/dist/Chart.min');
-
-// ------ Kimai itself ------
-require('./kimai.js');
-require('./datatable.js');
-require('./toolbar.js');
-require('../images/default_avatar.png');