[kronolith] Shared calendars disappear after page refresh (HEAD)

[Jan Kuipers]

When I select a shared calendar for viewing, the contents of the calendar shows 
up ok, but when I refresh or change a view, the shared calendar entries 
disappear again and I have to select the shared calendar again. But when you 
log off after selecting a shared calendar, the shared calendar shows up ok 
after login.

-- 
Jan Kuipers
Systeembeheer Lauwers College