* Implemented application of the 'Purge Logs' setting when creating
logs manually.
* Changed the wording of the 'Purge Logs' and 'Purge ELR Data'
control in the Edit Service dialog in rdadmin(1).
* Added 'RDLog::create()' and 'RDLog::remove()' static methods.
* Added a 'STATIONS.SHORT_NAME' field to the database.
* Incremented the database version to 270.
* Added 'RDStation::shortName()' and 'RDStation::setShortName()'
methods.
* Removed the 'Broadcast Security Model' control from the 'Edit
Host' dialog.
* Added a 'Short Name' control to the 'Edit Host' dialog.
* Implemented a '%R' wildcard for Rivendell Host Short Name.