Scaffold navbar elements
Re-add HTML to header

* Not sure what the extra html does, so I'm hiding it for now
Style navbar
Style/coding improvements

* Swap in variables
* Fix operator alignment
* Round corners
More style improvements

* Make gradient a mixin
* Clean up colors
* Hover the link color
* Added rounding to navbar
Merging master branch into nav for merge into master.
Merge pull request #2 from AramZS/nav-and-header

Navbar and Header [WIP]