[ContentBundle] Fix wrong prefix
Merge pull request #1963 from stloyd/patch-2

[ContentBundle] Fix wrong prefix
Fix composer.json files + CHANGELOGs
Merge pull request #1964 from stloyd/bugfix/composer

Fix composer.json files + CHANGELOGs
Initial API
Setup testing architecture for API
Fix relations and metadata loading
Initial shipping method api tests
Rework code & fix issues after gathering feedback
Remove Alice and use already existing fixtures
Cleanup API code