001: initial fieldScanner implementation
002: visualization, custom overwrite
003: modeSwitch also available when no course is loaded
004: fix modeSwitch validation
0246: Merge branch 'fieldScanner'

* fieldScanner:
  004: fix modeSwitch validation
  003: modeSwitch also available when no course is loaded
  002: visualization, custom overwrite
  001: initial fieldScanner implementation