MOTECH-1177: Fixed issues with openmrs-19

Module should now run properly.

* Replaced openmrsWsSettings with openmrs19Settings
* Added missing bean declarations in xml
* Fixed blueprint osgi:service declarations
* Removed required field service, which only was
  the MRS UI that was removed

By the way I also cleaned up some javadoc and code in service
classes, as suggested by IntelliJ.

Change-Id: Icd2e9db4c8cb3efc12032037d949f61ceb1359f5