Added convenience Select All and Copy Node Id actions, platform-dependant keyboard shortcuts done in Java-endorsed way.
Next/Prev search actions to reveal occurrence (which otherwise is impossible to find)
MPS-19369: Generator errors are not clickable any longer: with temporary in-place models when both transient and in-place generation options were requested, navigation doesn't work as the model is not exposed to end-user under transient module. Besides, the odd check to avoid references to transient nodes being used as message hint gone.