Tuned the triggers default behaviour

* By default now, there are no beginning or after delays, but
a 2 second delay before action, for all triggers.
* Triggers now have a 'reset' method which fires by default, making
the trigger useable again after it has fired (but it still needs to
be queued).
* Added simple text blurb to replace Timed Text Blurb. Timed texts
are now possible with default trigger options.
Scene Update -- Added tutorial

The tutorial brings players through all of the basic controls,
as well as flight controls.