Update required django-sekizai version to 0.7 due to backport of #1577
Add changelog / release notes for upcomin 2.3.7
Add benliles to AUTHORS
Ooops, missed the travis configuration file update
Fix the documentation index
Removed unused import which make tests fails
Merge pull request #1839 from yakky/feature/update_sekizai_in_2_3_7

Requirements and doc fixes for 2.3.7