Important roles can now not resign if they are the last in their group.
Fixes Issue 288.
I've decided to do it outside of the logic because if the need arises to kick the last org admin out of a group we need the ability to do so.
Patch by: Lennard de Rijk
Reviewed by: to-be-reviewed
Third-party code that is *not* part of the application image (the Google App
Engine SDK in trunk/thirdparty/google_appengine, for example) belongs in
trunk/thirdparty. For third-party code that *is* part of the application
image, see the notes in trunk/app/README.
== THIRD PARTY LICENSES ==
Third-party code must also include a license text file, named LICENSE or
COPYING, in the package subdirectory. If the third-party package subdirectory
is maintained automatically with a tool such as svn_load_dirs.pl (which
removes files, such as license text files, that were added later to the
"target" directory), place the license text file in the trunk/app directory
and add the package name as a suffix.