As a note keeper I want a agenda view for today, that I can see what I have to do today

[rockiger]

• [ ] Agenda View shows all tasks or Doings
• [ ] Define Model, based on org-mode-parser-nodes
• [ ] Agenda View shows a Timetable for Today
• [ ] Agenda View is based on Org-Mode's
• [ ] Toggle Button should be Bootstrap, for nice design
• [ ] Editor should have focus after it is shown
• [ ] There is a Menu entry for Agenda Views
• [ ] There is a Shortcut for the Agenda View
• [ ] Agenda-View should always updated when it's shown