IMeassge interface added. Removed caching in BaseDirectMessage.
Merge remote-tracking branch 'origin/master' into versioning
FirstProcessStep handling modified.
Fixed ProcessStepTest sending the message
Merge branch 'master' into versioning

Conflicts:
	org.hive2hive.core.test/src/org/hive2hive/core/test/flowcontrol/ProcessStepTest.java
	org.hive2hive.core/src/org/hive2hive/core/flowcontrol/ProcessStep.java