Merge pull request #44 from t-8ch/master

fix date for 8. Treffen der PyUGRM
Update mongodbfrm.xml
Added group photo.
Added GDG Rhein-Main Stammtisch - Juli 2013.
Treffen #20 dazu.
Start GI Rhein-Main
Merge branch 'master' of https://github.com/tacker/ugrm-data into girheinmain
Merge pull request #48 from ascheman/girheinmain

Start GI Rhein-Main
August-Treffen dazu.
Fixed date.
3. Agiler Stammtisch
Merge pull request #49 from serhiy-yevtushenko/agilestammtisch

3. Agiler Stammtisch
Added location.
Add stugrm.xml file
Add more information about the usergroup
Fix broken xml
Thought I could create a meeting wihtout a date, like a teaser
Merge pull request #51 from danielknott/stugrm

Created the xml file for the Software Test User Group Rhein Main - Stugrm
URLs must not be empty if present.
WEMOOF #3 dazu.