A ticket for managing development of collection_view.
Overall missing features:
[ ] Selection managing
[ ] Focus
Overall bugs on devs/bu5hm4n/cv:
[ ] Edje sometimes tells 0x0 as a size, that is a bug, or we need to listen to it, and fallback to the item base size for that (@zmike)
[ ] When adding a request with need_entity to a inflight request without need_entity, no entity is requested (Hard to reproduce)