Merge branch 'bug-17897-UltrasoundMultipleActiveDevices'
Conflicts:
Modules/IGTUI/Qmitk/QmitkTrackingDeviceConfigurationWidget.cpp
Plugins/org.mitk.gui.qt.igttracking/src/internal/QmitkMITKIGTTrackingToolboxView.cpp
Plugins/org.mitk.gui.qt.igttracking/src/internal/QmitkMITKIGTTrackingToolboxView.h
Plugins/org.mitk.gui.qt.igttracking/src/internal/mitkPluginActivator.cpp
Plugins/org.mitk.gui.qt.ultrasound/src/internal/UltrasoundSupport.cpp
Plugins/org.mitk.gui.qt.ultrasound/src/internal/UltrasoundSupportControls.ui