Add ETag support for Photo annotations #140
Add ETag support for Organizatins #140
Add ETag support for People controller #140
Make sure Relation edits touch parent Entity objects #140
Make sure new Annotations touch parent Entity and Photo objects #140
Add ETag support for Photo controller #140
Optimize stale check to avoid loading all objects #140
Add ETag support to Welcome controller #140
Optimize ETag validation in Welcome controller (and prefetch some children objects, unrelated) #140
Prefetch Mentions when showing a Post
Optimize performance by prefetching children in People, Photos and Organizations controller