OpenMW-CS: Defect in Clone Function for Dialogue Info records

The Clone Record function is effectively broken. We have no need to create an EXACT duplicate of an existing record; the principal reason to use this feature is to create a content-identical clone in a different Topic ID, different Journal ID, etc., yet the clone function forces the original ID, and it cannot be changed. You have to use the Add Record option to be able to choose the ID of the Topic or whatever it is, but then you can't clone any of the data over.

It would be easier if we were simply able to rename things. I shouldn't actually have to re-create a companion piece by piece, making my own copies of 1gr_blah_blah_blah resources (OpenMW doesn't want stuff to start with numerals in the first place); I should just be able to search-and-replace on IDs in the opened content file (but probably not any of its dependencies like the original game files) that start with 1gr_ and change them to drq_ (or at very least be able to rename them one at a time).

(RM-4363 from redmine: created on 2018-03-13 by Dark Locq, )