Fix schedule window and make it more useful (please add suggestions)

[GoogleCodeExporter]

I'd like to have this feature in the programm:

The schedule window doesn't seem to work at the moment and only offers a 
limited amount of actions, times and editing.

The feature is important for me because:

It's not. Please add suggestions!

The feature is important for other users because:

Don't know.

Original issue reported on code.google.com by [email protected] on 20 Jun 2013 at 8:21