feat(loading-screen): use Img component to display images

The Img component will not render if the src is bad.
Which is sadly the case for npm installed widgets currently.

Author: adamweeks

package-lock.json

@@ -105,6 +105,7 @@
     "react-dom": "^16.8.4",
     "react-draggable": "^3.0.3",
     "react-dropzone": "^4.1.3",
+    "react-image": "^2.1.1",
     "react-intl": "^2.2.2",
     "react-mentions": "^1.2.1",
     "react-redux": "^5.0.1",