Live execution of schema/transformation specification

Editor should allow live adaption of grammars/transformation and the application on available data

=>don’t close yet, see comments

(from redmine: issue id 297, created on 2018-01-22tgradl, closed on 2018-01-22)

• Relations:
  • relates #314
  • relates #328 (closed)
  • relates #361
  • relates #362