Fix the broken testcase

Issue #2709483 by CTaPByK, slashrsm: EntityRevisionRouteAccessChecker doesn't correctly handle local tasks

Rebase on Drupal 8.1

Provide a generic delete entity action.

- Rename entityInfo to selection.
- Inject the $entity_type_id to the form.
- Do less in the constructor.

Clean up EntityCreateController: Remove unused parameter from addPage(), document thrown exception in addForm().

Implement a revision overview controller.

Provide a generic entity revert controller.

Add a content entity form which allows to set revisions

Provide contextual links for all entity types

The trait and interface didn't matched