updated grid.html added correct classes
worked on grid cells

todo: fix grid non-cells, make new bg image
deleted quartets, quintets, and sextets

todo: fix grid non-cells, make new bg image
added back in quartets and quintets, added background images

TODO: fix grid non-cells
adjusted background images
added stylesheet for grid.html
rearranged some class definitions, added more rows to demo
modified grid styles
moved cell width functionality to cells; removed row--sextets
added code to grid demo on grid.html

TODO: update content on grid.html and then MERGE this branch to css
added to TODO. do these then merge branch to css-naming
fixed automated widths
OO block system
converted background images to SVG
added CSS to SVG
updated grid.html with grid styles

TODO: fix all that typography shit
fixed typos
Merge branch 'grid' into css-naming