[JBIDE-13675] replaced silentlyDestroyAllDomains by #destroyAllDomains

implemented DomainTestUtils.destroyAllDomains() and replaced usage of
DomainTestUtils.silentlyDestroyAllDomains() by it so that domain deletion
errors are not swallowed any more. Domain deletion is a pre-condition
in these UserResourceIntegrationTest
[JBIDE-13689] moved EmbeddableCartridge to public package

moved EmbeddableCartridge to public package to allow user code to instantiate
embeddable cartridge in tests.
[JBIDE-13689] added test for LatestVersionOfName#matches
[JBIDE-13531] added tests for EmbeddedCartridgeResource#getUrl
[JBIDE-13708] ensure can deal with short answer (no reason phrase)