event-tile: Use Evolution calendar shell for launching events
event-tile: Use Evolution calendar shell for launching events

Fixes: http://bugzilla.meego.com/show_bug.cgi?id=494

kkszysiu/gnomesocial,meego-netbook-ux/meego-panel-myzone,meego-netbook-ux/meego-panel-myzone,kkszysiu/gnomesocial