Issues moved between projects show up in both projects

[mbafford]

When you move an issue from one Jira project to another, the system keeps an alias of the two ticket IDs, so either works for referencing the ticket. This seems to confuse ejira, in the sense that it thinks both the old and new ticket ID are different tickets.

For example, if I pull OLDPROJ-500 into my org files, then move OLDPROJ-500 to NEWPROJ, it becomes NEWPROJ-1, and both OLDPROJ-500 and NEWPROJ-1 end up pretty much identical between my two ejira ORG files.

Proposal:

• Add a new psuedo state "Moved" for the old issue, so that it can be mapped to a distinct TODO task if desired.
• Add a new property referencing the new issue ID.