Change license to GPLv3

Remove check for null

HTML should be all caps

fixup logo(mosaico32.png) path for Django staticfiles

upgrade to https://github.com/tubaman/mosaico/commit/a27c4e7

don't scale with a null is passed to image along with cover

Return only one upload when POSTing to img

add TODO

fix wording in documentation

Make the setup documentation better

fix upload json rendering

add missing dependencies

fix default JSONField

require a staff user for the index and editor

used namespaced url