Set party.quest.key to null on quest reject and quest cancel

website/src/controllers/groups.js

@@ -959,7 +959,7 @@ api.questReject = function(req, res, next) {
 
   if (!group.quest.key) return res.json(400,{err:'No quest invitation has been sent out yet.'});
   group.quest.members[user._id] = false;
-  User.update({_id:user._id}, {$set: {'party.quest.RSVPNeeded': false}}).exec();
+  User.update({_id:user._id}, {$set: {'party.quest.RSVPNeeded': false, 'party.quest.key': null}}).exec();
   questStart(req,res,next);
 }
 
@@ -978,7 +978,7 @@ api.questCancel = function(req, res, next){
         group.markModified('quest');
         group.save(cb);
         _.each(group.members, function(m){
-          User.update({_id:m}, {$set: {'party.quest.RSVPNeeded': false}}).exec();
+          User.update({_id:m}, {$set: {'party.quest.RSVPNeeded': false, 'party.quest.key': null}}).exec();
         });
       }
     }