changed dependency to python 2.6.9
Merge pull request #1219 from ostcar/python2.6.9

Changed dependency to python 2.6.9
Added extra permission check to speaker widget, fixed #1191 only for 1.5.x branch
Merge pull request #1216 from normanjaeckel/SpeakerWidgetPermission

Added extra permission check to speaker widget, fixed #1191 only for 1.5...
Fixed flake8 errors.
Merge pull request #1225 from normanjaeckel/Flake8Errors

Fixed flake8 errors.
Fixed #551: Used unicode font for circle in ballot pdf. Removed pillow.

That fixed also #1140 (Server error when trying to view ballot paper pdf)
Merge pull request #1215 from emanuelschuetze/fix-551

Removed pillow. Used unicode circle font. (Fixed #551 and #1140)
fix user status view (activate, deactivate user without js)