Cleanup of RC button positions for Beyonwiz-branded ini5 remote.

Needed for Beyonwiz T3 bugtracker bug #301 - Help menu in main screen errors (Part of fix)

Moved button to correct location: INFO
Removed buttons not in Tools.KeyBindings for T3: PVR, PLAY, PAUSE
Renamed buttons with wrong naming for Tools.KeyBindings:
    BOUQUET+/BOUQUET- -> CH+/CH-
    FORWARD -> FASTFORWARD
Added missing buttons: BACK, PLAYPAUSE

Similar changes may also be needed in RC button positions for remotes
ini3 and ini4, but I have no access to those remotes or the systems that
use them.

This fix can be applied independently of other changes needed to
fix bug #301.