Simplify and clean up admin section

Remove unecessary system includes. Make use of MENU_LOCAL_TASK items.
Use t() for all translatable menu strings.
Add testing func. Add libraries use.

Also do some code formatting cleanup. I.E. 2 space indents vs tabs per
Drupal coding standards.
Finish libraries integration. Clean code format.
Remove require_once statement.

No longer necessary with libraries addition.
Remove HipChat-v1.php api script.

Added via library now.
Update documentation re: libraries
Comment code
Merge pull request #2 from gabesullice/feature/use-libraries

Make use of libraries module; Clean up code