Add "request a feature" to bottom"

People keep being really sheepish about feature requests.
Bump number of return sections

From default (20) to 150 (there were 131 uwriting sections in f2013)
Enable and style remove course button
Get rid of </div> tag that breaks modals
Specify radix in parseInt

FF was treating 08 as octal, yielding 0, which led to messiness.

Fixes #40.
merged master; removed compiled js files