2.7.0

1. Media keys support.
2. Remove podcast search, etc, as LMS now provides its own.
3. Allow configuring of web-app display setting.
4. Extend custom actions to allow invoking JSONRPC commands.
5. Add custom action support for genre and year listings.
6. Allow hiding of LSM settings sections via 'hideSettings' within server-side preference file. e.g. set "hideSettings: 'mediadirs1'" in "prefs/plugin/material-skin.prefs" will cause media dirs section to be hidden.
7. Dont add resize parameters to plugin image URLs.
8. Allow alert notifications to be canceled.
9. Add custom update notifications.
10. Hide playlists from online services from 'Add to playlist' and 'Save play queue' dialogs.
11. If have playlists from online services, then use the service's logo as an icon for online playlists and a list icon for LMS playlists.
12. Allow info and error notifications to be client specific - so will only show if Material's active player ID matches that supplied.
13. Fix downloading playlist.
14. Fix downloading individual tracks from playlists.
15. Don't allow adjusting volume via mouse wheel in group volume or 'Manage players' dialogs.
16. Add player icon mapping for HTTP and Alexa.
17. Remove note stating iPhone does not support drag'n'drop.
18. With embedded iframes dont add 'javascript:' entries to 'history' - fixes back button with 'Visual Statistics' plugin.