[kronolith] Free/Busy View (patch attached)

[Jason Rust]

> When I'm in the Kronolith Free Busy view and I click the arrow button to go
> to the next day, work week or week the page is refreshed but the day stays
> the same.

Attached is a patch that fixes the issue.  The patch also takes out passing 
the $vCal object by reference to addRequiredMember() since it's not needed 
and it caused confusion the other day.
-Jason
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