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.
Update studio.code.org with hoc2014 blocks, course4, and other improvements.
Update studio.code.org with four blocks for hoc2014, course4 block, new course1-4 info about age range, and lighten blocks to match studio bar on code.org.
Merge branch 'staging' into frozencarousel

Conflicts:
	pegasus/sites.v3/code.org/public/learn/index.haml
Minor aesthetic improvements to frozen carousel entry.
More improvements to studio.code.org and nearby pages.
draw more per step when at max speed
Merge pull request #600 from code-dot-org/frozenSpeed

draw more per step when at max speed
Hide Frozen from updated studio.code.org for now.
Dropbox changes
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
Merge branch 'staging' into studioupdates
Merge pull request #595 from code-dot-org/studioupdates

studio.code.org updates for hoc2014
levelbuilder changes
put notice/alerts back on the homepage (and make them bootstrappt)
Hide header based on max-device-width, not max-width

The header will be hidden on small screen sizes, but not on devices with
larger screens even if the window is resized to a small width.
Automatically built.

commit 2d4d2426d3259ddf57f9b70ca7472cfd83cc8d15
Merge: 52eb0e5 c3f2069
Author: Continuous Integration <dev@code.org>
Date:   Tue Dec 2 00:53:04 2014 +0000

    Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging

commit 52eb0e5312f8739e547c262a9b3d2ddd399bf9f8
Author: Continuous Integration <dev@code.org>
Date:   Tue Dec 2 00:44:44 2014 +0000

    Dropbox changes
level builder changes