feat(chat): allow banning problem users from chat rooms

src/controllers/groups.js

@@ -217,6 +217,7 @@ api.getChat = function(req, res, next) {
 api.postChat = function(req, res, next) {
   var user = res.locals.user
   var group = res.locals.group;
+  if (group.type!='party' && user.flags.chatRevoked) return res.json(401,{err:'Your chat privileges have been revoked.'});
   var lastClientMsg = req.query.previousMsg;
   var chatUpdated = (lastClientMsg && group.chat && group.chat[0] && group.chat[0].id !== lastClientMsg) ? true : false;
 

src/models/user.js

@@ -109,7 +109,8 @@ var UserSchema = new Schema({
     mathUpdates: Boolean,
     rebirthEnabled: {type: Boolean, 'default': false},
     freeRebirth: {type: Boolean, 'default': false},
-    levelDrops: {type:Schema.Types.Mixed, 'default':{}}
+    levelDrops: {type:Schema.Types.Mixed, 'default':{}},
+    chatRevoked: Boolean
   },
   history: {
     exp: Array, // [{date: Date, value: Number}], // big peformance issues if these are defined