WSOTWO-136: Added unit tests to Header mediator
WSOTWO-136: Added tests to Send and Filter mediators
WSOTWO-136: Added tests to Switch mediator
WSOTWO-136: Added license to Switch test
WSOTWO-136: Added tests to Respond and LoopBack mediators
WSOTWO-136: Added tests to Root element
WSOTWO-136: Added tests to Sequence element
Merge branch 'master' into WSOTWO-147
WSOTWO-147: fixed some tests