Support manual sorting in parented list mode.
Show the parent headers, even there are no child records.
Detect global new element button by manual sorting property.
Manually load RTE editor within Contao 3.3+.
Only sort new created models.
Add after-parameter to new URL for the saveNcreate action.
phpDoc and code style.
Merge branch 'release/2.0.0-beta12'