jQuery doesn't work on node 0.10.x

I've included a workaround for coolaj86/node-jquery#52 -- use `jquery-loader` instead of the package maintained by @coolaj86 (`node-jquery`). See more here: coolaj86/node-jquery#59
`jquery-loader` serves jQuery 1.10.1 by default which should not have an impact on how it is used in this project.