[kronolith] Typo in Kronolith API for import of iCal

[Thomas Trethan]

Hi,
adding new events via SyncML stopped working in Kronolith 4.2.6. After a
bit of research I found a typo in lib/Api.php in function import(): when
instantiating Kronolith_Icalendar_Handler_Base (line 747) the first
parameter should be $iCal instead of $ical. This causes a null value in
Kronolith_Icalendar_Handler_Base and SyncML dies badly.
Regards, Tom