more refinements on CVWidgetMSEditor: make the global mappings-select recognize current mappings correctly. minor bugfix in the OSC batch-connection mechanism

Signed-off-by: nuss <st9fan@gmail.com>
more refinement on CVWidgetEditor resp. CVWidgetMSEditor: current calibration-values being displayed properly. Fix a small regression where the current connection-status wasn't displayed anymore in the OSC edit-buttons in CVWidgetKnob resp. CVWidget2D

Signed-off-by: nuss <st9fan@gmail.com>