OP-963 made TelemetryMonitorWidget skinnable
- moved telemetry monitor widget from coreplugin to new telemetry plugin
- added a telemetry monitor gadget based on monitor widget.
- cleaned up telemetry monitor widget and made it skinnable
Dependencies have changed:
- connection manager (in coreplugin) is now unaware of the telemetry monitor widget
- the widget is added to the connection manager tray by the telemetry plugin
- the telemetry plugin depends on coreplugin and uavtalk
OP-963 TelemetryMonitorWidget added some doc + polishing
Merge remote-tracking branch 'origin/next' into filnet/telemetry

Conflicts:
	ground/openpilotgcs/src/plugins/coreplugin/connectionmanager.cpp
	ground/openpilotgcs/src/plugins/coreplugin/mainwindow.cpp
	ground/openpilotgcs/src/plugins/coreplugin/telemetrymonitorwidget.cpp
	ground/openpilotgcs/src/plugins/coreplugin/workspacesettings.cpp
	ground/openpilotgcs/src/plugins/uavtalk/telemetrymonitor.cpp
uncrustification
OP-963 minor UI tweak to the status bar icon tray margins
Merge remote-tracking branch 'origin/next' into filnet/telemetry

Conflicts:
	ground/openpilotgcs/src/plugins/coreplugin/coreplugin.pro
OP-963 fixed bad merge