Cloud Saves + more bugs, features and fixes.

Added features:

• Can now disable proximity sensor from the tools screen
• File manager screen now shows the total space and available space on the headset.
• Cloud Backups can be triggered from the apps screen.
• Updated Synthriders support for custom songs ( thanks )
• Fixed a bug preventing any of the "Open Folders" actions from running.
• Fixed a graphical bug in the file names in the file explorer
• Fixed a graphical bug in the "Open Folder" options in the tools screen.