Fixed a bug when adding multiple plugins
Fixed a bug when adding multiple plugins

The structure returned into the dataBridge when adding the plugin was
ordered `parent -> child + child` but the frontend expects it to be
`child + child -> parent` because if the plugin doesn't have it's own
markup - the data about the child and parent is added to the same node
and the first one initialized must be the innermost one.

datakortet/django-cms,yakky/django-cms,yakky/django-cms,divio/django-cms,czpython/django-cms,divio/django-cms,rsalmaso/django-cms,rsalmaso/django-cms,czpython/django-cms,mkoistinen/django-cms,rsalmaso/django-cms,rsalmaso/django-cms,datakortet/django-cms,datakortet/django-cms,czpython/django-cms,divio/django-cms,czpython/django-cms,divio/django-cms,benzkji/django-cms,yakky/django-cms,mkoistinen/django-cms,mkoistinen/django-cms,benzkji/django-cms,yakky/django-cms,benzkji/django-cms,mkoistinen/django-cms,datakortet/django-cms,benzkji/django-cms