Renditions could be saved with a wrong file format

Problem/Motivation

Fotoweb supports more file extensions, then GD2 or ImageMagick can process. When you import Fotoweb images from preview images, you might import a JPEG file for a CR2 original file.

The Fotoweb module currently uses the asset JSON information to build the filename. When you're importing a CR2 file, you will import a JPEG prevew image, which get stored with the *.cr2 file extension. This might confuse the image toolkit when it should apply image filters.

Steps to reproduce

Proposed resolution

Store the imported image with the filename of the file, that was actually imported.

Remaining tasks

User interface changes

API changes

Data model changes