Merge pull request #2 from rrix/master

Update playbooks with Tom's access account, and general housekeeping
Let's document some of what we do here. Resolves nortonimperiallabs/doocracy#39.
Add role tree for discourse
include with_items doesn't work any more
Install the app and run bundle install
Fix location of discourse role
Add discourse.conf template
Copy templates from the discourse repository
Make discourse run? \o/
Wire Discourse's thins up to nginx

Still getting permission denied errors, need to fix
Run as the Discourse user instead of root
Some weird unstaged change that probably fixes sth
Ensure workiness of Discourse
Syntactic fixes
Bump discourse version
Merge branch 'master' of github.com:rrix/sfhackerspace-infra
Bump Discourse version to 0.9.9.12 and make syntax not drunk