Ignore new tags/branches

Prevents Strider from starting a Job on these, since it doesn't currently handle
them.

Author: Ilya Radchenko

lib/webhooks.js

@@ -246,6 +246,11 @@ function receiveWebhook(emitter, req, res) {
     return startFromComment(account, config, req.project, payload, sendJob);
   }
 
+  // ingore new tags and branches
+  if (payload.ref_type === 'tag' || payload.ref_type === 'branch') {
+    return debug('New tags/branches aren\'t currently supported');
+  }
+
   // otherwise, this is a commit
   var result = startFromCommit(req.project, payload, sendJob);