[#1977] port pet-feeding to user.ops, so that it's now available in the API. Also add handling of 200 errors to simply notify and continue on up to server (friendly messages)

src/controllers/user.js

@@ -505,6 +505,9 @@ _.each(shared.wrap({}).ops, function(op,k){
   ------------------------------------------------------------------------
 */
 api.batchUpdate = function(req, res, next) {
+  if (req.body[0] && req.body[0].data)
+    return res.json(400, {err: "API has been updated, please refresh your browser or upgrade your mobile app."})
+
   var user = res.locals.user;
   var oldSend = res.send;
   var oldJson = res.json;

src/models/user.js

@@ -75,7 +75,7 @@ var UserSchema = new Schema({
     contributions: String // a markdown textarea to list their contributions + links
   },
 
-  balance: Number,
+  balance: {type: Number, 'default':0},
   filters: {type: Schema.Types.Mixed, 'default': {}},
 
   purchased: {