snappy: moved to ::desktop

Signed-off-by: Marc-Antoine Perennou <keruspe@exherbo.org>
mongodb: add 2.6.1

Signed-off-by: Marc-Antoine Perennou <keruspe@exherbo.org>
docker: bump to 1.0

Signed-off-by: Marc-Antoine Perennou <keruspe@exherbo.org>