Title/loader page

[invicticide]

Project configs contain metadata (title, author, etc.) which is currently unused. These should be surfaced into a title page which is displayed initially when opening a new story.

The title page div should be placed near the top of the template, so it loads first and can be rendered ASAP. The title page contains a loading spinner graphic. Core registers an onload such that when the rest of the Fractive story and its dependencies (images, etc.) are all fully loaded, then the loading spinner in the title div is replaced with a "start" link which invokes a Core.GotoSection("Start") to start the game.