add site header
refactor section headers.
added ability to collapse/ expand methods
Refactor OAuth panel to drop down from top via click on button in header. (incomplete)
worked on onClick function for header oAuth
menu item active class
rename header classes in nav panel
move oAuth out of Header component
remove text decoration from nav items
fix header uri size and location
allow oauth link in header to toggle the oauth panel, remove unused code
collapsing method panels merged into this branch
Remove navigation header and add to site header.
Merge branch 'design/collapsing-method-panels'

Conflicts:
	application/ui/scss/components/panel/_panel-section.scss
Merge branch 'design/new-site-header'

Conflicts:
	application/ui/layouts/header.jsx
	application/ui/scss/components/panel/_panel-section.scss
	application/ui/scss/layout/_header.scss