Fix for issue #12 - improve user and group validation.
Issue #10: Show all repositories, whether user can admin them or not.
Add a title attribute to show the repository admins when the user hovers over the repository.
Issue #20: Add basic developer documentation.
Issue #19: Log script actions.
Output the script action output and warning messages to STDERR.  This will result in the messages appearing in the Apache error log.  This is not ideal, but at least provides an audit trail of user actions.