[RL] Comment mod and other minor changes

[RL] Comment mod and other minor changes
_ Add comment about why it casts to (object)
- Modify function comment
- Whitespace (start the function body on a new line in debug mode. In production mode this is trimmed away afterwards)
- Remove the jQuery->$ passage from loader. There is already a global alias for $ by jQuery, and aside from that every module has it's own (function(){}) wrapper that aliases it from jQuery (not from $), so there is no performance gain either by having it locally here since it doesn't use that.