Fixed hardcoded LANGUAGE_COOKIE_NAME in multilingual middleware
Tests in language middleware for custom LANGUAGE_COOKIE_NAME setting
Backport #1792 to 2.3
Backport #1809 to 2.3 (actually creating the method)
Add tests for permissions cache
Explicitly set cache timeout for PermissionCacheTests
Backport to 2.3.x fix for #1577
Merge pull request #1815 from yakky/feature/1577_backport_23

Backport to 2.3.x fix for #1577
Merge pull request #1820 from yakky/feature/move_create_user_23

Backport #1809 to 2.3 (actually creating the method)
Merge pull request #1822 from yakky/feature/pr_1792_23

Backport #1792 to 2.3
Merge pull request #1821 from yakky/feature/permissions_cache_tests_23

Feature/permissions cache tests
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
Backports `cms fix-mptt` command from 2.4.
This just adds a convenient command to call code that already exists in 2.3
documentation added for fix-mptt