Revert part of 81dffd5ab it causes a 5 min delay before the BE would go idle
UPnP: Set sane defaults for the required properties of the Storage* containers
UPnP: Make sure that if no extensions handle sub-classed containers that we fall back to creating the parent container instead.
UPnP: Have the video extension create movieGenre containers
UPnP: Fix the service IDs for CDS and CMGR which were both incorrect.
ExitPrompter: Add a 'Show Standby' option

This adds a 'Show Standby' option to the 'Customise exit menu option' settings
which if selected will show just the 'Enter Standby Mode' on both the exit
prompter and system menus.

This is useful if you are using a combined FE/BE system and you don't want
your users to be able to shutdown or reboot the system or exit the FE.
MythCenter-wide: tweak the width of the status text on the Idle Screen
Merge remote-tracking branch 'upstream/master'