i18n - add it, ko, ru, zh_TW languages
fixes #7409 - API v2 - add host attribute to GET response for auth source ldap
fixes #3544 - Editing an oVirt compute resource allows changing the type, which is unsupported
Fixes #7489 - changed root password label to 'must' instead of 'should'
Fixes #7437: validation instead of PGError when host group title is exactly 256 characters
refs #7038 - use n_() for plural support, use Rails style length message