initial python rewrite
build.py
lots of fixes. seems to be working again now.
compass CSS submodule. also, requirements.txt
fix some bad HTML
remove site title header
lots of updates for a new article

* 3D tree content and JS
* template refactored into base.html
* alternate no-img article template
* build.py updates to handle multiple pages
minor edits
clear out tree to make way for python rewrite
Merge branch 'python-rewrite'