This is done by moving users/edit_embed.pug to users/edit_embed_base.pug,
and having a new users/edit_embed.pug extend that. Projects like Blender
Cloud can then provide their own users/edit_embed.pug and override certain
blocks.
Now settings live in a dedicated space, the settings blueprint can be used by Pillar applications, and the templates can be extended or overridden. Moved subscription and email settings to the blender-cloud repository.
Added specific handling for clicking on non-existing users. The styling
might need some tweaking (it's pretty ugly), but then again, it's just
for us admins.
Refactor of pillar-server and pillar-web into a single python package. This
simplifies the overall architecture of pillar applications.
Special thanks @sybren and @venomgfx
