The functionality of the former "CAP" and "SIGNAL" services is now provided by core's "PD" service.
Issue #1766
This patch removes the policy for controlling the X-Ray mode from nitpicker to the separate component os/app/xray_trigger. Fixes #1690
The menu view generates a simple dialog of widgets and reports the hovered element. It is meant to be embedded into applications that require simple GUIs but don't want to deal with the pecularities of a full-blown widget set.
