Merge pull request #99 from Ookami86/master

Add new usergroup (Software Architecture) and update Softwerkskammer with iCal URL
Merge pull request #100 from Ookami86/master

Fix url of iCal feed
Adds basisffm twitter account, drupal donnerstag.
Allow underscore in hashtag.
Added techettes ffm.
Added techettes orga team.
Plural.
WEMOOF 8 dazu.
Update webgrrls.xml
NodeJS DA dazu.
Added Gophers Frankfurt
Added logo
Add location
Update twitter handle, logo and group photograph