Context Navigation

Changes between Initial Version and Version 1 of Ticket #53, comment 37

initial	v1
5	5	- Had to add a z-index to the mobile menu to override trac for the dropdown. Need to double check that and see if that's right or there is a better way.
6	6
7		- Had to add a background:none to the mobile menu hamburger link, so as to ~~add a background:none to override a background color rule~~ in wp-trac.css.
	7	- Had to add a background:none to the mobile menu hamburger link, so as to override a background rule on links in wp-trac.css.
8	8
9	9	- Minor adjustments to padding and margins, some from typos, some from wp-trac conflicts