Add second time field for list of speakers. Now you can click begin and end speach.
Show a defined value of last speakers
Some work on the design of the speaker-list on the projector
Rework on list of speakers. Insert a method to get a formated list for various use in the templates.
Merge pull request #625 from normanjaeckel/ListOfSpeakersRework

Add second time field for list of speakers.