Fix selection of VOLUME images (ImagingDataCommons#83)

* Fix selection of volume images
* Upgrade package dependencies
* Update package version

Update dependencies

Update dicom-microscopy-viewer dependency

Fix coding style issues

Hardcode URL of homepage

Create React App mangles the `homepage` variable defined in
`package.json`.

Consider THUMBNAIL images part of the pyramid

Specify PUBLIC_URL in Dockerfile

Increase version for release and fix coding style

Add configuration for preview

Add switch to toggle display of annotations