Hotfix/3858 - findHelper problem in Navigation Helper

- update creation of internal hash
- more unit tests added
Merge branch 'hotfix/3982'

Close #3982
Merge pull request #3991 from froschdesign/hotfix/3858

Hotfix/3858 - findHelper problem in Navigation Helper
Merge branch 'hotfix/3991' into develop

Forward port #3991