Add collectstatic to fabfile and update.py

Do not override STATIC_URL in tests

working on dev settings

We don't use FILES_URL (downloads path comes from downloads.latest url)

MEDIA_ROOT is more like UPLOADS_PATH

Don't touch this part of prod settings for now

Let's use /storage/ for medias, as media is the old path of statics

The plan is to map MEDIA_URL to MEDIA_ROOT, which is UPLOADS_PATH

Remove settings that match default computed paths

Rebasing, god bless my git

gitignore storage/*

Use normal media url for themes

Wrong use of cache_buster