[FIX] Calendar: fix drag'n dropping of events
[FIX] Calendar: fix drag'n dropping of events

vnc-biz/openerp-web,vnc-biz/openerp-web,gisce/openerp-web,vnc-biz/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,vnc-biz/openerp-web,gisce/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,splbio/openerp-web