TRUNK-4260: Error while submitting empty form in the page: openmrs/admin/concepts/conceptSource.form
TRUNK-3625: Fixed web image handler

org.openmrs.web.controller.observation.handler.WebImageHandler#getObs
must pass valid java.util.Locale object to org.openmrs.Obs#getValueAsString.
Locale is now obtained from Context.

See https://issues.openmrs.org/browse/TRUNK-3625
Merge pull request #971 from vencik/master

TRUNK-3625: Fixed web image handler
Merge pull request #969 from rpuzdrowski/TRUNK-4260

TRUNK-4260: Error while submitting empty form in the page: openmrs/admin/concepts/conceptSource.form
Added @Transaction annotation to ProviderServiceImpl.getUnknownProvider() to make it read only - TRUNK-4402