Poll WIP (#231):

* muted participants can't vote
* removed "Choice N" from button labels.

server/lib/prosody/config/content.ts

@@ -536,7 +536,6 @@ class ProsodyConfigContent {
    */
   usePoll (): void {
     this.muc.add('modules_enabled', 'muc_poll')
-    this.muc.set('poll_groupchat_votes_priority', 1000)
     this.muc.set('poll_string_over', loc('poll_is_over'))
     this.muc.set('poll_string_invalid_choice', loc('poll_choice_invalid'))
     this.muc.set('poll_string_anonymous_vote_ok', loc('poll_anonymous_vote_ok'))