update frontend

Signed-off-by: stony <webmaster@sport4u.at>
update admin/language/de-DE/de-DE.com_sportsmanagement.ini
Merge branch 'master' of https://github.com/sigal/sportsmanagement
update admin/models/forms/club.xml
Merge pull request #58 from sigal/master

update backend sprachvariablen