Do not create .gitkeep file when creating directory
Trigger error when required field is not presented in its form.
Adjust docu of CM_Form_Abstract::getField.
Merge pull request #1473 from vogdb/issue-1473

Check return expectations of Form::getField
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
Remove jquery.placeholder.js
add IE9 to CM_Request_Abstract::isSupported()
extract replacement-code from CM_Model_LanguageKey::create()
Make ContentList tests not fail randomly
streamline docu and typehinting
remove styles from form.less
run updatescript online
Merge pull request #1465 from alexispeter/languageKey-concurrency

Make sure Language::getTranslation removes duplicate keys
Make test less dependant on other test