Missig string JHELP_ADMIN_USER_PROFILE_EDIT

Add the missig string JHELP_ADMIN_USER_PROFILE_EDIT see: https://github.com/joomla/joomla-cms/pull/3485
Merge pull request #25 from zero-24/patch-9

Fehlender Sprachschlüssel JHELP_ADMIN_USER_PROFILE_EDIT