Fix: forgot to add the xml-template for commit cf867b12
Codechange: use html-template to generate the register-user-form in admin area
Codechange: assign table to class admin, reformat the last table row
Cleanup: some code style thingamabob
Codechange: new strings for title of the submit button for register-user-form in admin area in English and German languages
Cleanup: some code style thingamabob