Fixed legacy permission name "approve_permission_requests".
Fixed forms to not bypass validation for permission requests.
Combined the templates for permission requests forms and permission forms in one file.
Added ability to withdraw a permission request, along the lines of the permission denial.
Updated URLs to be more awesome.
Refactored template tags to be classbased, easier to use.
Changed signature of permission_form templatetag and added ability to pass a template name with which the form should be rendered.
Combined permission_form and permission_request_form in one template tag class.
Added utility to determine best URL to redirect to after successful permission (request) creation.
Made sure the new GET access to the permission form views is secure. Please test!
Added new "approve_permissions" admin action to easily approve permissions in the admin.
Updated default templates to use the new features.
Now dance.
