refs #9848
- Disabled image optimization for .gif files as a temporary solution until sharp library starts supporting latest version of libvips
- Disabled image optimization for .svg/.svgz files as permanent solution as these file types are being converted to .png
refs #4453
* On by default
* Added config to disable resizing
* Added basic image optimization processing
* Added dep: sharp (optional dep)
* Added resize middleware
* Take care of rotation based on EXIF information
* Removed all meta data from optimised image
* Added handling if sharp could not get installed
* Do not read ext twice - optimisation
* Do not call sharp if config is disabled
* Do not remove the original image which was uploaded (store 2 images)
* Support of `req.files` for internal logic
* Disabled cache to enable file removal on Windows