Fixed the clone button

Fixed #180

Originally, this did not put the original issue's body or title. However, in hind-sight, this button is for "cloning" and issue. I also took out the "Follow-up to: [#N]" bit since we can now add the parent relationship.
Added feedback from markcarver/dreditor#1
Merge pull request #183 from markcarver/issue/180

Clone button does not work in Chrome