Fix sass variables.
Merge pull request #100 from tobyk100/master

Fix sass variables.
Use nicer urls for hour of code /hoc/:chapter
IE8 and less detection.
Fix nesting error.
Merge pull request #101 from tobyk100/ie8

WIP. IE8 and less detection.
Added x button to close.
iamge
Temporairly disable caching for mooc assets
Asset pipeline.
Merge pull request #102 from tobyk100/x-button

Added x button to close.
Added x image.
Got rid of leading assets.
Updated instruction on Maze Level 2_8 and 2_10.
Merge pull request #103 from nanan9177/master

Updated instruction on Maze Level 2_8 and 2_10.
make sure to throw RecordNotFound (aka 404) for invalid levels

Also combine 2 show methods
merge