Minor fixes

These should be super minor changes to the modules.
I personally think that because the module itself uses the userbar, it should live as a property of the userbar. If you prefer, we can prefix "private" properties with an `_` to indicate that they shouldn't be used by external code (similar to Python convention). We should probably discuss how modules should ideally be structured though. (Also, it's easier to do it this way if you just want one `$.extend` haha)