Replaced relative import (PEP 328) by absolute import
Removed call to `manage.py syncdb` (not working!), reverted absolute to relative imports (PEP 328)
Replaced dependency emencia-NL 0.2/stable by 0.3/develop
Fixed django-reversion issue with django-cms/cmsplugin_zinnia (https://github.com/Fantomas42/cmsplugin-zinnia/issues/23)
Added explanation comment on emencia-NL dependency
Replaced django-cms dependency (allow reversion upgrades)