Preparation for a Demo — Thibalryn Steam update #132828

Here is the changelog: 1567737721 Created DemoManager Stage pipe teleports will no longer occur if set to a stage destination of 0 Stage pipe teleport game objects are now set as enabled in the dev stage Game objects modified by demo mode now are automatically added to a list Readded name branding to title screen Demo tiles added to block stage pipe teleports when running in demo mode Stage pipe teleports will become disabled if running in demo mode Steam achievements will not unlock while running in demo mode Demo branding message appears on title screen if running in demo mode