refuse to delete frozen definitions

Dependencies

• [2] QFFTXR7E new file-system format for freewheeling apps
• [*] TNRO6KLZ new live app

Change contents

• edit in main.lua at line 194
  [2.1769]

  [2.1769]
  + if app.Frozen_definitions[definition_name] then

  + app.send('ERROR definition '..definition_name..' is part of Freewheeling infrastructure and cannot be deleted.')

  + return

  + end