image-focal-point app makes focal points that are not supported in the images API

Installing the image-focal-point app allows us to set a focal point on an image.  
This focal point is then not supported in the [Image API](https://www.contentful.com/developers/docs/references/images-api/#/reference/resizing-&-cropping/specify-focus-area) which is unfortunate, as they are both products of contentful.