anatomy - remove dup preface code block
base - group rules to simplify
base: preface refactored
anatomy: preface refactored
biology: preface refactored
sociology: preface refactored
physics: preface refactored
ccap latest styles
physics: style section listitems
sociology: style section h2s and listitems
Merge branch 'master' into refactor-ccap-preface
base: add comment
Merged from master
Merge pull request #87 from Connexions/refactor-ccap-preface

Refactor ccap preface