- Add GUI option to configure default DLNA database directory.
- Choosing a media server database directory is now done with get_disk_tree()
- Added 'Use Default' buttons for media server directories
- Move help inline instead of help_content.js
- Use default dms_dbdir if empty
Use dms_dbdir even when dms_dir has been set.
Merge pull request #375 from VinceVal/master

- Add GUI option to configure default DLNA database directory.