refine showMessage / flashMessage behaviour
clear some debug outputs
Merge branch 'sprint1' of
https://github.com/TestingTechnologies/PlayCustomParameters into sprint1

Conflicts:
	ttworkbench.play.parameters.ipv6/src/ttworkbench/play/parameters/ipv6/components/messaging/components/MessageHydra.java
	ttworkbench.play.parameters.ipv6/src/ttworkbench/play/parameters/ipv6/editors/integer/IntegerEditor.java