This mod is to add the scheduling code to the Image backups that I added
to the Backup code.  So it also adds an option to stop the automated
image backup from querying you whether you wish it to run when the box
is not in standby mode - if this is set then you may also background any
manual image backup.
It also adds the auto-trim option for images.

The code is in vix-core under src/

The ImageManager.py and setup.xml need to be copied to:
   /usr/lib/enigma2/python/Plugins/SystemPlugins/ViX

See thread:
   http://www.world-of-satellite.com/showthread.php?49352-Scheduled-Image-backups-a-few-issues

NOTE: given that the OpenVix developers don't want to make this
backgroundable as it has caused issues in the past I've removed that
ability from my changes.