Mobile fixes (#1539)

* Make new tag, gallery and studio pages mobile friendly
* Enable new button on mobile
* Update movies edit HTML to be more in line with scene

Update the code of the MovieEditPanel to be more in sync with the
SceneEditPanel. Changes made are:
 * Use FormUtil.renderLabel instead of manually building
 * Always apply xs=9 breakpoint

This fixes some layout issues on mobile while still looking the same on
tablet and desktop resolution.

* Enable delete button for tags, studios and movies on mobile
* Add changelog

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

ui/v2.5/src/components/Shared/DetailsEditNavbar.tsx

@@ -61,7 +61,7 @@ export const DetailsEditNavbar: React.FC<IProps> = (props: IProps) => {
     return (
       <Button
         variant="danger"
-        className="delete d-none d-sm-block"
+        className="delete"
         onClick={() => setIsDeleteAlertOpen(true)}
       >
         <FormattedMessage id="actions.delete" />