Cleanup user controller file

* Missing `return`s after certain callbacks
* Reorder some `var` on first use
* The usual split `return`s
* Rename some regular expression identifiers to STYLEGUIDE.md conformance e.g. Hungarian Apps notation
* Some max line length of 100
* Remove some older code not currently implemented AFAIK
* Remove some dead code
* Fixed unneeded directory traversal TODO
* Added one WARNING in on near duplicate code in another file in the controllers folder
* Removed unneeded `nil` lib loading... as `helpers` is already there and `nil` isn't present in this file at all

**NOTES**
* This file really could use some trimming up with distribution across the project tree ... hopefully I got most of it
* The last function in this file is why `render` and `preRender` functions were chosen in this refactor and applied across the board with the controllers. :)

Originally applies to #262 ... and slight overlap of #262 (comment) *(preauth)*

Author: Martii