Refresh admin nm after group edit/delete

git-svn-id: http://svn.egroupware.org/egroupware/trunk@47595 923e3c2e-ae13-0410-ba18-ced7211e33de
send Accept-Language HTTP header when querying news

git-svn-id: http://svn.egroupware.org/egroupware/trunk@47596 923e3c2e-ae13-0410-ba18-ced7211e33de
change url of egroupware.org news feed to http://www.egroupware.org/start/rss.xml

git-svn-id: http://svn.egroupware.org/egroupware/trunk@47597 923e3c2e-ae13-0410-ba18-ced7211e33de
Changing group in admin needs to refresh nm group filter too

git-svn-id: http://svn.egroupware.org/egroupware/trunk@47602 923e3c2e-ae13-0410-ba18-ced7211e33de