mod_conference add vid-floor command to branch off the floor for video on demand and force it to a particular member vid-floor can be api or bound to dtmf but who gets the floor must toggle it off before someone else can have it.  vid-floor-force (vid-floor <member> force)can be clobbered at any time

skinny: improve cleanup of devices during registration and unregistration, resolves some weird state issues when devices get disconnected

Revert "FS-5567 --resolve add a non-error level informational log message when no files match pattern"

This reverts commit 79d23ec0.

pulling this one for a bit...

This reverts commit 518b5a80.