[Constraints] Move fixes from IConstraint to IConstraintUI
Rationale: many fixes require interactions with the user
(from redmine: issue id 2727, created on 2016-10-27, closed on 2017-01-30)
Rationale: many fixes require interactions with the user
(from redmine: issue id 2727, created on 2016-10-27, closed on 2017-01-30)