granular permissions - setting user permissions

granular permissions - setting user permissions

Adjusted the user permissions editing page as follows:

* Replaced table with a list
* Implemented a tree control using the jQuery Treeview plugin
* When CheckSpecificUserPermissions is ON, if a module
  flag has specific (i.e., children) permissions, allow
  them to be edited - this is where the tree control
  comes in.
* Added some hooks and an initial stab at the CSS
  to style the permissions editor tree.

Signed-off-by: Joshua Ferraro <jmf@liblime.com>