When working on issues in Jira and logging work done it would be cool to be able to export this activity to vCal format. This would enable developers that need to track their hours towards activities to update their calendars with what development activities they've done for future reference (i.e. logging hours into a hourregistration system).

The vCal link could appear on the work log pane in the issue overview page (right next to the permlink).

The vCal should include the issue number and possibly title as "Subject" and the work log comment as body. The vCal should have stoptime equal worklogitem.created and start time equal stoptime-timeworked.