chore(ngdocs): setup bower as the package manager for the docs pages
feat(ngdocs): setup karma-docs testing suite to test docs components
feat(ngdocs): expose showdown.js to docs pages and docs testing suite
feat(jqLite): provide noop mock event for event.stopPropagation
fix(ngMock): ensure mocked window still provides window.location functionality
feat(ngdocs): provide support for inline popover, foldouts and foldover annotations