Demos: First pass on new navmenu.
Demos: Switching to overlay panel for the navmenu.

Because we now don't have to deal with the page contents wrapper, we
don't have to clone the menu to show it on wider screens.
Demos: Removing role="button" from anchors.
Demos: Replaced data-role="button" in toolbar demo popup.
Demos: Replaced data-role="button" in Backbone demo.
Demos: Nav menu active style tweak.
Demos: Global nav menu structure.
Demos: Removed script for old global search input.
Demos: Clean up page linking demo.
Indentation
Demos: Content custom style tweaks.
Demos: Prevent transitions on global navmenu panel at wide screens.
Demos: Global navmenu changes.
Demos: Header style changes.
Demos: Global navmenu style.
Demos: Added style for pages without global navmenu.
Demos: Added filter text to global navmenu, updated titles.
Demos: Reorganized form demo pages.
Demos: No quicklinks if only one section on page.
Demos: Removed fieldcontain hide label examples because it has been deprecated.