Merge pull request #435 from khandelwal/master

Do not track test.config.js
Diff users should be taken back to the version they came from
moving to bower
Merge branch 'master' of github.com:eregs/regulations-site
add .bowerrc
add back modernizr
Display footnotes in SxS -- very rough
PEP8
build after npm install test
Merge pull request #438 from cmc333333/footnotes

Simple UI for SxS footnotes
Add from_version to TOC and next, previous links
ignore unecessary built files
PEP8
ignore unecessary built files
ignore unecessary built files
ignore unecessary built files
add tests for from_version
PEP8
adding back built require.js for prod
Merge branch 'master' of github.com:eregs/regulations-site