Made the Twitter Account Links clickable on the Supporters' Slide-out…

… drawer

This is now the case for some responsive sizes and desktop.  These links are not displayed in Cordova.

Resolves https://wevoteusa.atlassian.net/browse/WV-102

src/js/components/Ballot/PositionItem.jsx

@@ -366,7 +366,7 @@ class PositionItem extends Component {
                                   </TwitterFollowersWrapper>
                                 </div>
                               )}
-                              linkIdAttribute="candidateTwitterDesktop"
+                              linkIdAttribute="positionItemTwitterDesktop"
                               url={`https://twitter.com/${position.speaker_twitter_handle}`}
                               target="_blank"
                             />