fix(material-sidenav): properly add backdrop
fix(sidenav): use a backdrop element
refactor(): remove popup service, remove backdrop service. simplify.
test($materialToast): fix tests
docs(): separate demos and api documentation
docs(): s/COMPONENTS/API
docs(toast): fix closing html tag
docs(): add docs for sidenav
docs(): start rewrite of layout grid page
docs(): more rewrite of layout page
docs(layout): fix typos
feat: use normalize.css to drive the CSS normalization
fix(dialog): use transitionend event instead of $timeout
docs: make list bullets placed inside
fix(docs) - updated tab demos and documentation
chore(): remove app engine files
docs(): add links from demo pages to doc pages
docs(): take out API: header
docs(): move buttons up to toolbar
docs(layout): rearrange left menu and add docs