added warning to svc reg impl along with test cases
removed uneeded throws clauses and the clazz name from the log
fixed test failures on jdk8. json field order mismatch
#754 - Incorrect labels in russian for next messages:
screen.service.error.header
screen.service.error.message
screen.service.empty.error.message
Merge pull request #755 from danil-zarubin/754

#754 - Incorrect labels in russian for next messages:
Merge pull request #752 from Unicon/jdk8-test-fixes

Fix test failures on JDK8
Merge branch 'master' into inmemory-svcreg-warn
added since flag
Merge pull request #750 from Unicon/inmemory-svcreg-warn

Add warning to InMemory Service Registry
Merge branch 'master' into arg-extractors-refact