NMJv2 Notifier - Improved

Notifier for the Networked Media Jukebox for the 300 and 400 series.
Now uses the NMJ API on the PCH to locate the database. No need to search the contents of the shares anymore.

Users need to select the DB location (local harddrive or network share), the Find Database button does the rest. For users with more then one Database: If the wrong database is selected the 'Database Instance' dropdown menu can be used to skip the first Nth DB occurences.