Updated website and Sofortbild download

I updated the website including the screenshot to reflect the latest version. I also created a new build of Sofortbild (v1.2.4) that includes all the features that have been available in the Mac App Store version for a while now.

This version still supports Mac OS X 10.5 and includes support for all camera models mentioned on the website (for older models you have to enable legacy support in the preferences window and then relaunch the app though).