Allow passing custom fragments to withReaction and withTag

plugins/talk-plugin-featured-comments/client/containers/Comment.js

@@ -31,7 +31,6 @@ export default withFragments({
           name
         }
       }
-
       user {
         id
         username

plugins/talk-plugin-featured-comments/client/containers/ModTag.js

@@ -1,5 +1,16 @@
 import ModTag from '../components/ModTag';
 import {withTags} from 'plugin-api/beta/client/hocs';
+import {gql} from 'react-apollo';
 
-export default withTags('featured')(ModTag);
+const fragments = {
+  comment: gql`
+    fragment TalkFeaturedComments_ModTag_comment on Comment {
+      user {
+        username
+      }
+    }
+  `
+};
+
+export default withTags('featured', {fragments})(ModTag);