preface bugfixes from dev - removed testing overrides
preface test data from bio
clean spacing | hide figure title
Added install instructions for OSX
Added python version
Added minimum python version
Merge pull request #64 from Connexions/preface-bugfixes

Preface bugfixes
Merge pull request #65 from Connexions/osx-install-instructions

Added install instructions for OSX
Merge pull request #66 from Connexions/qa-bugfixes

Qa bugfixes
Merge branch 'master' into anatomy
Merge branch 'anatomy' into dev

Conflicts:
	css/ccap-biology.css
	css/ccap-biology.less
	test-ccap/m-preface/index.cnxml