Resolve "Add 'homeLink' or 'landingPage' to manifest"
- App ORM model now also contains the 'homeLink' attribute
- refactored the Header logo to use a SectionLink with 'homeLink' as sectionId instead of a normal Link
- refactored Breadcrumb to also use the 'homeLink' from the store for the 'home' section
- adjusted Header and Breadcrumb tests
Closes #57 (closed)