Fixed accepted date format and added validation error reporting
Implemented limiting the number concurrent web service calls, but not
tested thoroughly.
Added aupport for error 101 "Tjeneste er utilgjengelig"
Eliminated redundant dbConnection.setCatalog("ServerCommon") calls
Minor edits before changing branch for some tests.
Simplified Database class by introducing try-with-resource.
Merge branch 'feature/governor' into develop