Merge pull request #46 from theresaanna/master

Interpretations visual treatment and interaction
Paragraph marker layer. Simple template for it
Add a paragraph marker layer test
Test was broken for search-replace layers
Fixed #48. Intepretations List Markers should now be correct. Also refactored how the list markers are generated
Fixed #48. Intepretations List Markers should now be correct. Also refactored how the list markers are generated
Merge pull request #52 from khandelwal/master

Fixes #48.
Merge pull request #49 from cmc333333/markers

Paragraph marker layer. Simple template for it
Use the tree ID when dealing with layers (rather than the markup id)
Merge branch 'master' of git://github.com/eregs/regulations-site into interpretation-links
Layer generators should always return an empty list; never None
TOC tweaks
Heading normalization and imporvement
non-semantic helper classes
Move TOC into reg-header
add sitewide header area
update minified CSS file
persistent reg header on scroll
Merge pull request #55 from ascott1/master

Persistent header on scroll
Merge pull request #54 from cmc333333/interpretation-links

Use the tree ID when dealing with layers (rather than the markup id)