Merge remote-tracking branch 'mavlink/master' into flightView

* mavlink/master:
  update android version
  qmake cleanup git version
  travis-ci enable ccache for linux
  travis-ci switch linux to container infrastructure
  travis-ci disable android debug
  Fix mode selection coloring
  Fix binding loop
  Decimal place support from meta data
  Fix item dragging
  Fix home position handling
  Fix signalling
  Decimal place support from meta data
  Fix item dragging
  Fix home position handling
  Fix signalling
  Move ParameterLoader override to FirmwarePlugin