Minor changes to components

Author: chalettu

client/app/shared/ace-editor/ace-editor.component.js

@@ -1,4 +1,3 @@
-/** @ngInject */
 /* eslint-disable sort-imports */
 import ace from 'brace';
 import 'brace/mode/text';

client/app/shared/select-dropdown/select-dropdown.component.js

@@ -5,7 +5,7 @@ export const SelectDropdownComponent = {
   bindings: {
     model: "=",
     options: '<',
-    required: '<',
+    required: '<?',
   },
   templateUrl,
 };