Created head-bottom.html include, made all pages include it
- Added fontawesome to every page
- Modified the menu icon to use fontawesome
Changed name of hamburger-icon to menu-icon
Improved the menu's rendering and hid the header on sub-pages on narrow devices
- Changed to using new icon and "Menu" label
- Made the nav bar appear full width on narrow screens
- Made the nav bar disappear and have the menu icon top left when page is wide enough to have menu icon alone on the left
- Hid the header on sub-pages on narrow devices
Fixed menu icon in Firefox
- Made the menu icon wider
Merge branch 'during-conference' of github.com:CANHEIT/CANHEIT-2013 into during-conference

Conflicts:
	include/head-bottom.html