added webpack-encore for managing frontend assets #113 (#122)

* updated installation docu #113
* rewritten login page #113
* added icheck plugin #113
* changed to YesNoType in edit forms #113
* updated CONTRIBUTING.md #113
* added start of developer docu #113
* added compile scripts and compiled assets #113

assets/js/app.js

@@ -0,0 +1,31 @@
+// ------ jquery and bootstrap basics ------
+// create global $ and jQuery variables
+const $ = require('jquery');
+global.$ = global.jQuery = $;
+
+require('jquery-ui');
+require('bootstrap-sass');
+require('jquery-slimscroll');
+
+// ------ for charts ------
+const Chart = require('../../vendor/almasaeed2010/adminlte/plugins/chartjs/Chart.min.js');
+global.Chart = Chart;
+
+// ------ AdminLTE framework ------
+require('../css/vendor.scss');
+require('../../vendor/almasaeed2010/adminlte/dist/css/AdminLTE.min.css');
+require('../../vendor/almasaeed2010/adminlte/dist/css/skins/_all-skins.css');
+require('../css/kimai.scss');
+
+global.$.AdminLTE = {};
+global.$.AdminLTE.options = {};
+require('../../vendor/almasaeed2010/adminlte/dist/js/app.js');
+
+// ------ Kimai itself ------
+require('./kimai.js');
+require('./toolbar.js');
+require('../images/default_avatar.png');
+
+// ------ icheck for enhanced radio buttins and checkboxes ------
+require('icheck');
+require('icheck/skins/square/blue.css');