Fix an error on Milestone1_TimelineData.page

The deploy was not working due to an error on the visualforce code.
Error shown by ant:
    pages/Milestone1_TimelineData.page -- Warning:
    Element type "event" should be followed by either attribute
    specifications, ">" or "/>" in Milestone1_TimelineData at line 30
Convert a home page component to Visualforce

The "Add A Task" home page component used unsupported code (iframe). Now
it's type is Visualforce component.