user/jszakmeister: drop setting up the colorscheme

It's the default now, so there's no need for it.
user/jszakmeister: drop company-related bits

I've moved them to a separate plugin at work.
user/jszakmeister: implement a better algorithm for finding sniputil

Update my snippet template to match.
user/jszakmeister: drop the unity snippets

I'm moving them to a separate plugin so others can have them too.