gui: Replaced the view list in the data model with a ListVA
Merge branch 'master' of delmic-server.local:odemis
Recompiled XRC data
gui test: The Acquisition test case is now skipped if a running backend if found. Since this tests needs its own, specifically configured backend, it would create problems with any existing backend
gui data model: Changed the `streams` set into a ListVA
config: some notes about PI controller udev rule
gui: start support for AR stream

not yet working, but more chances to
Merge branch 'master' of vpn.delmic.com:odemis
gui: put back spectromert/AR buttons

we'll need them to activate/deactivate the streams