Check-out 1.x xxxx-xx-xx
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New features:
- Moved the option to keep documents checked out to the access permissions table.
- Moved the only remaining setting to the Post settings page (admin/content/node).
- Users with the 'administer checked out documents' permission are now given the option to immediately check-in a locked document through a link in the error message.
- Added support for PostgreSQL.
- Added PHPDoc code documentation.
- Added German translation.

Bugs fixed:
- Fixed unnecessary messages generated by cron.
- Fixed double-escaping of content titles in check-out lists.