The user's logged in status is included in the velocity context for a couple methods in the SkinnableCharonPortal but not in startPageContext(). Adding this here would allow the portal velocity templates to conditionally display based on whether or not the user is logged in.

For example, we'd like to present a set of HTML pages in place of the standard portal gateway. While this can be mostly accomplished done with redirects, it doesn't handle the case of users who have already bookmarked https://over.the.rainbow/portal. If loggedIn is included in the context, we can update the site.vm file to conditionally display the html pages when the user isn't logged in (these html pages include links to login to the portal).