updated czech translation
updated czech translation on content types
update – unused messages deleted
Fixed double escaping of hints
Removed unused old code
Fixed comments
fixed unused messages and improved quality of translation
Added translation keys that somehow got lost on rebase in _macros.twig
Added translation keys that somehow got lost on rebase in _panel-actions_users.twig
Added translation keys that somehow got lost on rebase in backend.php
Updated English translation files
Updated German translation files
Merge pull request #1956 from lexislav/patch-1

updated czech translation
Merge pull request #1958 from lexislav/patch-2

updated czech translation on content types
Fix CRLF
Merge pull request #1963 from rarila/translation-fixes

Translation fixes