Initial work on special Frozen "carousel" for code.org/learn.
Small updates to frozen carousel: infinity logo back; only show for English until translated.
Add Scrat to hour of code carousel bar for full desktop width displays.  For fun.
Let's make the tiny Scrat blink.  For fun.
Merge branch 'staging' into frozencarousel

Conflicts:
	pegasus/sites.v3/code.org/public/learn/index.haml
Minor aesthetic improvements to frozen carousel entry.
Update Frozen image.
Merge branch 'staging' into frozencarousel

Conflicts:
	pegasus/sites.v3/code.org/views/learn_carousels.haml
Merge pull request #564 from code-dot-org/frozencarousel

Frozen "carousel" banner at code.org/learn