delete duplicate languagekeys on language key creation, reuse first one inserted
include languagekeys with trailing slashes in language-translation paging
delete duplicate languageKeys, keeping the one with the lowest id
remove unnecessary _getContainingCacheables()
- dont delete duplicate languageKeys in findByName() anymore
- clear env between CM_Paging_Translation_Language unit-tests
simplify replace()
fix typo
extract replacement-code from CM_Model_LanguageKey::create()
streamline docu and typehinting
run updatescript online
Merge pull request #1465 from alexispeter/languageKey-concurrency

Make sure Language::getTranslation removes duplicate keys