Big component restructure/overhaul

ember/app/components/ui/controls/dropdown-split.js

@@ -0,0 +1,16 @@
+import Ember from 'ember';
+
+import DropdownButton from './dropdown-button';
+
+export default DropdownButton.extend({
+    layoutName: 'components/ui/controls/dropdown-split',
+    classNames: ['dropdown', 'dropdown-split', 'btn-group'],
+
+    mainButtonClass: function() {
+    	return 'btn '+this.get('buttonClass');
+    }.property('buttonClass'),
+
+    firstItem: function() {
+        return this.get('items').objectAt(0);
+    }.property('items.[]')
+});