Fixed some documentation

Rewrote the Add/Remove to Install Queue links to use links and ajax, so that it still works when not using JS
Wrote a new Testing module to help with tests

Also added a red x icon for the remove links

Issue #1224196 by aspilicious: Moved the js block for the multiselect attach to it's own js file and used Drupal.t

Issue #1224188 by aspilicious: Fixed a number of documentation and other small coding standards things
Issue #1224196 by aspilicious: Move the jquery multiselect library to it's own library hook

Combined the Select Releases and Install Pages
Removed the Backup Page

Various other small changes

Organized the css and js into their own folders
Changed the base way that categories are handled

Removed pass by reference modifiers from the ajax callbacks

Changed the way servers are added and handled internally

Changed Install wording on checkbox

Created separate filter variables for modules and themes
Added a contextual link to the filters block

Added template provisions for author, usage, maintenance status, development status, and last updated

Filter out malformed HTML