Extract translations

- Adds app.translator calls for forum and admin interfaces.
- Locale file to follow later.

extensions/approval/js/forum/src/main.js

@@ -27,13 +27,13 @@ app.initializers.add('flarum-approval', () => {
 
   extend(CommentPost.prototype, 'headerItems', function(items) {
     if (!this.props.post.isApproved() && !this.props.post.isHidden()) {
-      items.add('unapproved', 'Awaiting Approval');
+      items.add('unapproved', app.translator.trans('flarum-approval.forum.post.awaiting_approval_text'));
     }
   });
 
   override(CommentPost.prototype, 'flagReason', function(original, flag) {
     if (flag.type() === 'approval') {
-      return 'Awaiting approval';
+      return app.translator.trans('flarum-approval.forum.post.awaiting_approval_text');
     }
 
     return original(flag);
@@ -43,7 +43,7 @@ app.initializers.add('flarum-approval', () => {
     if (!post.isApproved() && post.canApprove()) {
       items.add('approve',
         <Button icon="check" onclick={PostControls.approveAction.bind(post)}>
-          Approve
+          {app.translator.trans('flarum-approval.forum.post_controls.approve_button')}
         </Button>,
         10
       );