Initial MessageProcessStep
First parts of the refactoring (ProcessStep + Messages)
Small changes.
First error free (part core) refactoring result (combining messages with
process steps)
BaseMessageTest is working now
Fixed failing messages tests.
tests
Small bug fix
Stub for base direct message process step test
Merge branch 'messageProcessStep'

Conflicts:
	org.hive2hive.core.test/src/org/hive2hive/core/test/process/ProcessStepTest.java