Added article/overview style.
Merged article and intro.
Removed old pages directory, moved contents into better articles directory.
Removed old sampledata.
Removed reference to weird extraneous files.
Added a single standard article template file.
Removed old unused figures.
Moved annotations.json out of its assets directory.
Changed 'engineering' to 'cs'.
Moved assets into articles directory.
Moved articles under pages directory, added sister directory 'site' for site pages.
Rewrote build script to properly interpret new pages directory structure.