### Steps to reproduce

* Go to Administration -> Projects

* Have a look at all three sub pages 


### What is the buggy behavior?

* "Project attributes" has a breadcrumb (Administration -> Projects -> Project attribute)

* "New project" does not have a breadcrumb

* "Project lists" does not have a breadcrumb


### What is the expected behavior?

1. All administration pages should have a breacrumb visible

1. Administration -> Projects -> New project

2. Begin of the insertion~~AdministrationEnd of the insertion Begin of the deletion AdministrationEnd of the deletion -> Projects -> Project Begin of the insertionlists~~ was done in the scope of #56587End of the insertion Begin of the deletion listsEnd of the deletion

2. Technial acceptance: Introduce Begin of the insertionPrimer::OpenProject::PageHeaderEnd of the insertion Begin of the deletion Primer::OpenProject::PageHeadersEnd of the deletion to solve this.


### Environment information

**OpenProject version**

_14.3_

**Browser**

* [x] Chrome
* [x] Firefox
* [x] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Language**

_German_