FAIMS-636: adding thumbnail generation on web app for files
FAIMS-636: fixed bug with generating thumnails for video images + added test for requesting file with thumbnail info
FAIMS-636: fixed bug with thumbnails begin generated for thumbnails + added viewing thumbnails for images and videos
Merge branch 'master' of github.com:IntersectAustralia/faims-web
FAIMS-636: updated puppet script to install imagemagick and ffmpeg