New completion dialog

Shows the successful drake, plus how many reputation points were earned.
Also give the student the option to restart the task from scratch.
Don't bindAttr to anything but a view property

Otherwise, the bindAttr observer can fire *after* the view gets removed
from the DOM and this causes problems.
Use show/hide on completion dialog instead of adding/removing the hidden class
Obstacle course results dialog

This replaces the obstacle course page.
Better vertical position for obstacle course results dialog
Make modal dialogs actually modal
Meiosis tutorial message must be dismissed for meiosis to start
Refactor chained tutorials
Add finish button tutorial

It shows after the first drake tutorial.
added top green bar
Hide any open tutorial dialogs when Finish is clicked
Re-iterate the target traits in the failure message
Hitting enter in the password field now logs you in
Keep female gametes on the screen during meiosis
Visual tweaks to meiosis animation

So that chromosomes (mostly) stay within the cells.
Add hover action on question task bubbles
Make sure new organism meiosis genotype disappears first

Also, have the meiosis genotype fade out (looks better)