Setup babel for ES6 and JSX transformation.

[wolfd]

The eventual goal is to have SingularityUI to be entirely a React/Babel ES6 project.

Steps taken:

• Convert GlobalSearch to JSX/ES6

Notes on how to do coffeescript -> es6 transformation:

• the decaffeinate npm module does a lot of the heavy lifting, but do it one file at a time
• comment out all of the CJSX parts of the file, convert those manually
• rewrite parts that use coffeescript specific functionality (such as the in keyword)
• because of the differences in ES6 imports versus CommonJS, you have to add .default to the ES6 imports

[tpetr]

add const globalSearchClasses here instead of the let at the top of the file