Allow longer item descriptions
Fix: accidentally used content_start_y for x coordinate calculation
Multiline schedule events (ALPHA!)
Also do multiline on up next slides
Change header for next up slides
Remove useless subheader if multiline entry pushes us to next slide
Fix: slide_thumb_url created wrong kind of wait.gif <img> elements
Use transaction in svg_save
Use transaction in svg_save
Fix: editing and fetching http-slides
Allow creating slides by uploading a image (alpha)
Remove defunct slide action buttons