[WIP] adjusted PortalRouteProvider to match new RequestAnalyzer

[short description]:

__Tasks:__

- [ ] test coverage
- [ ] gather feedback for my changes
- [ ] submit changes to the documentation

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | noe
| New feature?  | yes
| Tests pass?   | yes
| Fixed tickets | none
| Doc           | none