Merge pull request #1 from JoshData/master

Add some default/sensible link targets, which is what we need to use on GovTrack now.
Honor requests not to display elements.
Merge branch 'master' of github.com:GPHemsley/congressxml
Revert "css tweak"; we'll handle this a different way.

This reverts commit 1372269b3c25e08e84de633a99b79c8f71b1c9c0.
Add support for a bunch more elements and improve styling.
Fix copypasta.
Improve cross-reference and citation handling.
Another citation workaround.
Improve link output for citations with skipped segments and citations of proposed segments.