Extension:GroupPermissionsManager

What can this extension do?
This extension allows modifying the underlying Group Permissions via a special page interface. It accomplishes this by writing a PHP file in a /config subdirectory of the extension. It's easy-to-use User Interface gives a grouped alphabetical listing of all rights that can be assigned with radio button toggles, as well as being aware of whether it is modifying an existing group or adding a new one. Deletion of groups is also possible, but this extension will not remove users from the deleted groups. Also, implicit groups are unable to be deleted via this interface. Modifications made via this extension are logged publicly on-wiki.

In addition to the Special Page, this extension implements a finer-grained permissions system into MediaWiki. Namely, rights were added that control viewing of specific pages, and a few more were added or modified that change how editing rights are assigned.

Usage
Browse to Special:GroupPermissions (will be listed under "Restricted Special Pages" in 1.12 wikis or the "Wiki data and tools" in 1.13+ wikis), and enter in a group name. If the group doesn't exist, an alphabetical listing of all assignable rights is given, each set by default at 'false'. If the group does exist, an alphabetical listing of all assignable rights is given with each set at the current value of that right (so if 'sysop' could 'delete', that would be shown as 'true'). If the group exists and it is deletable (see above section), then a group deletion form is displayed as well. Change the values you want, enter a comment, and click the confirm button. An explanation of the three toggle options is below:
 * True: Any user in that group has that right.
 * False: The group does not have the right (overrides previous trues of that right, e.g. in DefaultSettings.php and LocalSettings.php). Any other "True" defined in other group will override this setting
 * Never: Anyone belonging to this group loses the right irregardless of any other "True" or "False" declarations

Download instructions
For version 2.0, which works with 1.9+ wikis, please see this revision. For the latest version, grab it from Subversion.

Installation
To install this extension, add the following to LocalSettings.php:

Then, browse to your wiki's Special:Version to confirm installation of the extension.

User rights
The grouppermissions right is required to use the special page. It is given to bureaucrats by default, but you may wish to change this.

Other rights are detailed below, whether they were added or tweaked:
 * viewsource:Can view page source if unable to edit the page
 * raw:Can use action=raw
 * render:Can use action=render
 * info:Can use action=info, if enabled
 * credits:Can use action=credits
 * history:Can view page history listings (as of now does not prevent viewing old versions of a page
 * search:Can search the wiki
 * contributions:Can view contributions pages, including own
 * recentchanges:Can view recent changes
 * edittalk:Can edit existing discussion pages (does not require the 'edit' permission)
 * edit:Can edit existing non-discussion pages
 * createpage:Can create non-discussion pages (does not require the 'edit' permission)
 * createtalk:Can create discussion pages (does not require the 'edit' or 'edittalk' permissions)