Removed caldav stuff from crm module. Now
core crm module has only simple meeting future like stable 5.0.
and crm_caldav has more futures like:
* Recurrent meeting
* Alarms
* Invitation facility
* Share meeting with other calendar clients like sunbird
bzr revid: hmo@tinyerp.com-20100211065932-lm4lzinl15zq0dqb
Harry (Open ERP)