- Move SymEdit/Widget/gallery.html.twig => SymEdit/Widget/Media/gallery.html.twig
- Move SymEdit/Widget/slider.html.twig => SymEdit/Widget/Media/slider.html.twig
- Page controller names need to be change to underscore from hyphens
- Page controllers can no longer be defined in the routing, they need
to be defined in /Resources/config/symedit/page_controllers.yml
- Change theme.yml files to not have a root element anymore
- Possibly run symedit:theme:unique to clean any files that are duplicated
- Move any changes in symedit.yml to config.yml as we are including all the
base stuff in the corebundle