Merge pull request #10 from react-epfl/file_uploader

File uploader
Merge pull request #11 from react-epfl/file_uploader

put css file in css folder
Merge pull request #14 from react-epfl/file_uploader

adjust the height of the widget when first loading
adds file drop with previews and automatic update of resources
Merge branch 'master' of https://github.com/react-epfl/gadget into file_uploader