Start implementing web UI. Add track detail container. Comment out some old test code and DB code while more gets hooked up. Play/pause button is mostly implemented.

src/WebInterface.h

@@ -38,6 +38,7 @@ public:
     void skipVoteUpdateFromServer(User userVoting, bool forSkip);
     void voteNextSongFromServer(User userVoting, AudioTrack trackVoted);
     void voteNextPollClosedFromServer();
+    User currentUser;
 private:
     struct internal;
     internal* priv_int = 0;