Fixed #1195: Correct path to circle.png on ballot paper (assignment and motion).
Move projector.models.ProjectorSlide to core.models.CustomSlide
Fixed #1177 and #1209: Added new requirments for portable: setuptools (pkg_resources) and jsonfield.
Merge pull request #1196 from emanuelschuetze/fix-1195

Fixed #1195: Correct path to circle.png on ballot paper (assignment and ...
Merge pull request #1208 from ostcar/customslide

Move projector.models.ProjectorSlide to core.models.CustomSlide
Reinserted icon and link for preview of agenda slide. Fixed #1199.
Inserted command line option to translate config strings during database setup. Fixed #460.
Merge pull request #1212 from normanjaeckel/ConfigTrans

Inserted command line option to translate config strings during database...
Merge pull request #1211 from normanjaeckel/PreviewAgenda

Reinserted icon and link for preview of agenda slide. Fixed #1199.