Added a string for the current measurementspecification to the user.

TODO: the adding does not work yet! The new measurement specification
name is not updated in the list for the account!

Change-Id: Id0522c8ad3e38231707241aa84ac5cf97ace4de0
Signed-off-by: Peter Merkert <p.merkert@sap.com>
Fixed MeasurementSpecification switching to a new REST service. With
this change the RESTful service is now really strict, as adding a new
MeasurementSpecification does not switch it. This must be requested with
a new REST call.

Add comments to all the test in MeasurementSpecServiceTest.

Change-Id: I63974ba155bf01f8cd190282257c17e41992f9e8
Signed-off-by: Peter Merkert <p.merkert@sap.com>
Removed commented out test and added comments to the other tests.

Change-Id: I56ea68b4d189e3bf24d2b624141181a5180c386c
Signed-off-by: Peter Merkert <p.merkert@sap.com>
Fixed bug, thath a scenario cannot be deleted if a user has currently
selected the scenario.
Added comments to the ScenarioService, too.

Change-Id: Ia48f07761ffca4e5abe1cf35a847d11573c4e129
Signed-off-by: Peter Merkert <p.merkert@sap.com>