Adds jpanel to reveal mobile nav

There is still a bug in this. The title of the currently selected page is being superimposed over the top of the menu when it is exposed at mobile sizes. I can't resolve this before I leave for vacation so I am submitting with the bug to keep things moving.

Also, data-eq-pts="small: 420" is added to div#page-wrapper in line 1 of page.tpl.php and is the breakpoint for the menu. This will most likely need to change to come into alignment with the actual breakpoints for the design.