validation for plugins. added more docs for child plugins
Merge pull request #2621 from digi604/fix-2410

validation for plugins. added more docs for child plugins
fixed a typo
remove nested plugin validation
fixes #2571 and testsuite
cleanup
force_unicode on all badrequest and forbidden responsens
updated locales
Merge pull request #2625 from digi604/fix-2571

fixes #2571 and testsuite
Merge pull request #2626 from digi604/fix-1766

force_unicode on all badrequest and forbidden responsens
Merge branch 'develop' of github.com:divio/django-cms into develop
Removed extraneous comments, updated documentation, and fixed support for PageUser