contributing: add media_url to the local settings
static: update Bootstrap version to 3.1.1 (latest)
media: fix the media gallery (now has a lightbox again)
TODO: Update.
homepage: make featured images clickable
downloads: hide the branches list since we are not using branches anymore
blog: remove the 'Articles' page header, redundant and uses vertical space
base: use the correct content type for the Atom feed
settings: generate proper atom feeds by default
homepage: make carousel captions slightly more readable
base: remove the official website thing from the title
(small) translation update
Translation update from Transifex
Rename serie -> series. Fixes issue #12.