Notable changes:
* Updated to babel 6
* Updated polyfills to only include core-js/es6 and core-js/stage/4
rather than entire babel/polyfill set
* Dev server with hot reloading replaces server.js in development
* Updated bootstrap loading to be separate from app’s stylesheets
* Cleaned up some of the font dependencies, removing the need for
templating their paths
- Add function in Property and Form for creating refs
- Change `handleSelectFiles` to `handleChangedFile`
- Add `setThumbnailForFile` method to `ReactS3Fineuploader`
Clear some merge conflicts and also some wrong merges.
BAD GIT!!!
Conflicts:
js/components/ascribe_forms/property.js
js/components/ascribe_uploader/react_s3_fine_uploader_utils.js
sass/ascribe_uploader.scss
