2.2.1 Release in sync with pisignage.com server

1. Inline with pisignage.com release 2.2.1 (074d2b4)
2. Deprecate warnings removed for req.param, Buffer and mongoose promises
3. Support for new socket.io and faster disconnection
   • for the new socket.io version to be used specify the http protocol in server name if server does not support https protocol
4. Support for player configuration
   • Specify reboot of player everyday
   • mainzoneOnly flag in videoWindow to support full screen video in custom layouts
   • Online only playlist which is scheduled only when player is online
   • Audio playlist on HDMI port configuration
5. OpenVG (beta) ticker support
6. Show player uptime, processor temperature and space available in player (in player screen)
7. Alphabetical listing of players and all assets, groups, labels and playlists
8. Single button to deploy to all groups
9. Last sync, last reported format change to time ago
10. Auto orientation of image based on image header
11. Snapshot orientation corrected for portrait modes
12. Remove spaces from zipfile names