updated login page with some more spiffy stuff

added form field glow when focused

put logo at the top

updated signin page

refactor
added new layouts to bizstrap + cleaned out some old code

rearrange front page of bizstrap docs

actually center the centered icon

fix img paths

paths were broken in s3, added a new prefix variable to set them correctly on the cdn

cleanup more links
dry up the layout examples by using a nav include