EZP-28921: Configure content create view in AdminUI

[webhdx]

Question	Answer
Tickets	https://jira.ez.no/browse/EZP-28921
Bug fix?	no
New feature?	no
BC breaks?	no
Tests pass?	yes
Doc needed?	no
License	GPL-2.0

Checklist:

• Coding standards ($ composer fix-cs)
• Ready for Code Review

[barbaragr]

Unable to create User

1. Go to Admin/Users/Administrator Users
2. Click Create and choose User - User creation form is not shown, instead of that there is error 500:

The option "intent" with value null is invalid. Accepted values are: "register", "create", "update".

[m-tyrala]

The majority of issue works well, but there's problem with Delete draft action - e.g. when editing Home, delete draft action returns error:
An exception has been thrown during the rendering of a template ("Could not find 'VersionInfo' with identifier 'array ( 'contentId' => 52, 'versionNo' => 2, )'").