fmSetupAssistant: Settings: Avoid failure due to Settings Definition Error

[mrwatson-de]

So long as a definition error can be detected, it should be rendered harmless / deactivated.

• Avoid failure due to Settings Definition Error - implemented in version 0.27
  • Detect & visual warning of Data Type error
  • Detect & visual warning of Settings Definition error
  • Deactivate setting automatically, if a settings definition error is detected
  • Settings cannot be re-activated whilst they have a settings definition error
• Ensure that definitions cannot be written whilst deactivated

[mrwatson-de]

Implemented

• there's a for warning
• setting is deactivated when there is a definition error
• you can't turn a setting back on, while there is a definition error
• a big red market is down when a song is erroneous