Upgrade mobile views

[AndrewMagliozzi]

Note breakpoints:

Desktop (1024+) Tablet (641px — 1,024px) Mobile (0px—640px)

• We will design our app with two breakpoints 1024+ and 1023 down.

Let's also use off-canvas elements for header on mobile "medium-down":

http://foundation.zurb.com/docs/components/grid.html

See other visibility classes here:

http://foundation.zurb.com/docs/components/visibility.html

[charlesconnell]

This is folded into the redesign that is now in production.