refactor gulpfile

[Toddses]

take a long, hard, veiny look at the gulpfile and refactor the shit out of it. in particular, there is some unused code, sass compiling is not using sourcemaps (i believe gulp-ruby-sass now supports gulp-sourcemaps), vendors task could be broken into more manageable chunks, we could probably save some compiling speed, and the whole thing could use some better documentation. take a look at newer gulp plugins as well and see if there's any useful functionality there. and just a general rethinking of how some tasks are handled could be useful.

[Toddses]

i just remembered that gumby uses gulp-compass, which in turn uses gulp-ruby-sass. so make sure that gulp-sourcemaps is going to be supported on down the sass compiling chain.

[Toddses]

will hold off until gumby is using the latest version of compass

[Toddses]

This should also update the js linter to jshint-stylish