Hook up failure screen for scenario2
Merge pull request #177 from virtual-world-framework/lost-fail

Hook up failure screen for scenario2
Disallow subtitle reset on scenario reset
Make subtitles a little faster
Merge pull request #176 from virtual-world-framework/sub-reset

Disallow subtitle reset on scenario reset
By my reckoning this should work but isnt.
Moved lines inside return function to fix readBlackboard.
Amend to use delete instead of setting as undefined and appropriate use of ++.
Removed console.log call