Use inkscape to bake simple slides from now on
Remove unneeded mangling
With ws-simple editor we need to generate the svg ourselves also
Move the svg generating command to model
Only recreate simple slide pictures as needed
Add the fixture needed for testing updating of simple slide
Test updating a simple slide
Also clear up all created files
Clean up created files with teardown
Fix logging
We had leftover debug logging in there, now we just log all files deleted
at the level info