coffeelint!

__324 warnings in 42 files__ (coffeelint) have been fixed.

Mostly just unnecessary double quotes, unnecessary fat arrows, miss-spaced `->` and empty functions (`-> return`). I have not been able to run the specs on my setup, so please feel free to do so on your own (in case I broke something).

Greets
What is the upside to adding the `return` here?