Taken rules from Cockpit, which have been proven to be effective for
finding bugs and keeping clean code, and sensible (not taking
unreasonable effort to satisfy).
Fix code layout in app.jsx accordingly.
Closes#39
eslint is much more powerful and flexible than jshint, and we don't want
to promote writing new projects with pre-ES6 code.
As a side effect, this also avoids downloading PhantomJS (see
https://github.com/jshint/jshint/issues/3318), thereby cutting down
node_modules/ from 470 MB to 210 MB.
Rename some files and change some identifiers to be neutral to the
application name. This makes it simpler to change everything to a proper
name when cloning this project.
Document in the README how to find the remaining places to change.
Closes#20
