Order version fields by their order on the configuration screen

When ordering by fixVersion in the Issue Navigator, it seems to incorrectly order by the ID (projectversion.id) rather than the name (projectversion.vname).

To replicate:

1. Create version 1-3.
2. Create 3 issues.
3. Assign version 1 to issue 1 and so on for the 3 issues.
4. Go to the issue navigator and check the ordering of them (may need to modify columns). Example screenie attached.
5. Go back to the project version and change version 2 to 8.
6. Search again. Order is wrong, as per screenie.