Strip proprietary profiles from resulting images

[franz-josef-kaiser]

Expected Behaviour

Photoshop (and probably other editors) will show for e.g. the wrong pixel density. This is a known issue with GraphicsMagick, but can also be done for Imagick.

Feature Request.

Steps to Reproduce

Change density for an image, check resulting image resolution in Photoshop. Then compare with real size (photo preview apps normally do not take into account the profile and show the correct size).