Fix typo in assignment.
Insert new app to upload files via the frontend. Let tornado server media files. Insert icon-mediafile css class. Insert extra_stylfiles context variable.
Small modifications. Enhencement of tests.
Change order of classes for User and Group
Insert whitespace. Fix docstrings.
New feature: qr-code for system url on participants password pdf.
(Note: New dependency! Run 'pip install qrcode')

Fixed pep8 issues. Create qr-code image for system url one time only.

New feature: qr-code for system url on participants password pdf.
(Note: New dependency! Run 'pip install qrcode')

Fixed pep8 issues. Create qr-code image for system url one time only.

Print qrcode image from StringIO stream.
Adapted table stylesheet for better integration of reportlab's Image object.

Fixed pep8 issue.

Made qrcode import as optional feature. Fixed pep8 issue.
New config app. Apps only have to define config vars once. Config pages, forms and so on are created automaticly.

Changes after some reviews are done.

Problematic is still that the JS can not be moved to an extra file because of the template tags in the code.
Restart tornado on file changes, respect port and adress flags