used free wall to input grid items
added filtering grid demo
removed unecessary bits from test html
grid-test: set default to no filtering
I don't remember where I left off...
attempt at refactoring tiles
very very rudimentary tile template in place
downselect for single filter added! whoop whoop
all projects clear selection now works
multiple downselects implemented
forced tile item template to be somewhat appropriately sized
removed extra class css