Merge pull request #415 from codecombat/master

Merge master into production
Merge pull request #421 from codecombat/master

Merge master into production
Merge pull request #423 from codecombat/master

Merged master into production
Merge branch 'master' into production
Merge branch 'master' into production
Merge pull request #444 from codecombat/master

Master into production
Merge pull request #449 from codecombat/master

Master into production
Merge pull request #462 from codecombat/master

Merge master into production
Merge pull request #463 from codecombat/master

Merge ladder view into production
Merge branch 'master' into production
Merge branch 'master' into production
Added the jquery minicolors image.