Implement excludeIf for the plugins API

plugins/talk-plugin-featured/client/containers/Tab.js

@@ -1,5 +1,6 @@
 import {compose, gql} from 'react-apollo';
 import withFragments from 'coral-framework/hocs/withFragments';
+import excludeIf from 'coral-framework/hocs/excludeIf';
 import Tab from '../components/Tab';
 
 // TODO: This is just example code, and needs to replaced by an actual implementation.
@@ -12,6 +13,7 @@ const enhance = compose(
         }
       }`,
   }),
+  excludeIf((props) => props.asset.recentComments.length === 0)
 );
 
 export default enhance(Tab);