Make it possible to specify issue id on new issues
It will be very useful if Redmine could make it possible to override the default behaviour of assigning an autogenerated issue id to the new issues, if a given id is specified.There could be a field "id" on the new issue form with that behaviour:
- If left blank, the id will be autogenerated (as it happens now).
- If specified, the gived id is used for the creating issue (who insert that value has obviously the responsibility to chose one which is key in the issue table, otherwise a validation error will appear).
Enabling such a feature also for the email WS API would make the transition from other issue tracking systems a lot easier, because it would permit to keep the two system issues automatically in synch.