Changed initial sync when we have no syncstate yet.
This initial sync is a lot faster than before.

Signed-off-by: Michel <info@1st-setup.nl>
Removed some old code and added new functionality to only find calendaritems for which a uid is specified using a calendarview.
This improves speed when a new recurring event is created. It will only load a small time period.

Signed-off-by: Michel <info@1st-setup.nl>
Update to use new uid filter on findcalendaritems request.
Improves speed when we see a new master item and we need to get the occurrences.

Signed-off-by: Michel <info@1st-setup.nl>
remove some debug code

Signed-off-by: Michel <info@1st-setup.nl>
Fixes Bug 397: Blank body with "Convert To" command from mail to Events

Signed-off-by: Michel <info@1st-setup.nl>