p4ncake authored Jun 11, 2015 and Romain Bignon committed Jun 13, 2015

Signed-off-by: P4ncake <me@p4ncake.fr>
Signed-off-by: Romain Bignon <romain@symlink.me>

refs #806

Change every mention of MAINTAINER to avoid future issues.

There is now a "latest" collection (or "latest_nsfw").
The feature didn't look much used, since it didn't work on many
backends.
Using collections will make it easy to support other things
like most viewed, featured, etc.
As a bonus, I added tests for every backend with the feature.

do not use thumbnail_url anymore (closes #810), use set_empty_fields() method, do not give fields in constructor of BaseVideo anymore