Remove trailing whitespace from Sampler app.js and app.css, clean up some jshint issues too

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@palm.com)
Merge branch 'master' of github.com:enyojs/sampler
Revert "Update submodules to contain full URLs"

This reverts commit 1b8870cacf0efedd0bac93f2e98b1a9b296602b9.

holidng off on this for now, pending internal discussion