Add purecss and remove bootstrap
Add django-pipeline to compile sass
Create first draft of a design on top of purecss
fix #68, fix error with parsing of pull-request

When pull-request is pulled from the api the response does not have the
action field.
Add Build.commit_url for github projects
Rename Build.get_pull_request_url() to Build.pull_request_url
Merge pull request #80 from frigg/new-design

Swap bootstrap for pure and implement a new design
Merge pull request #81 from frigg/issue68

fix #68, fix error with parsing of pull-request
Merge branch 'master' of github.com:frigg/frigg into build-workers

Conflicts:
	frigg/builds/models.py
	requirements/base.txt