Link group name to the group page in header "Mails der Gruppe GroupName"
remove trailing spaces
remove trailing space
do not save mail address; refactor
test reflects reference to group page from the mail index page header
Merge branch 'master' of git://github.com/softwerkskammer/NeuePlattform-Implementierung
Merge pull request #237 from dpolivaev/master

Minor improvements for mailarchive