Test WP relations directive
Add WP relation directive
Created relation API model & representer
Added links from and to related work packages to the relation
Added links to parent and children to WP
Test that WP details controller parses relations
Extract related-to relations
Adapt test to promise handling
Show related WPs received by promises
Show the relations tab with related-to relations
Fix default URL settings and indentation
Improve styling of relation list
Display WP's full identifier
Fix link URLs
Show all relations (except parent/child)
Rename refactoring
Show parent/child relations
Rename WP relation directive
Test that no promises are passed to the directive
Resolve relation promises in the controller