Fixes new repeatable object not adding .data input and messing up previous items when moved.
v3 UI: variable renaming for consistency.
v3 UI: dropdown styling.
v3 UI: checkbox.
v3 UI: h2 heading.
v3 UI: date input.
v3 UI: menus.
v3 UI: missing checkbox images.
Fixes delete action on deleted draft deleting the published content.
Merge branch 'release/2.4' into feature/galleryEdit