[Request] Drag and drop with updating database

[bege]

Hi,

thank you for this great tool.
I miss the features to move by drag'n drop
- files and folders in folder view
- categories in categories view

with automatic update of the database so that categorizing of files doesn't get lost.

Lacking of this feature causes this bug: http://newsgroup.xnview.com/viewtopic.php?f=62&t=22223

Is there a feature to reorganize the database?

[xnview]

If you use drag&drop to move files into a folder, database is updated, and categories are not lost...

Currently folder can't be moved in folder view...

[xerofun]

Currently folder can't be moved in folder view...

Just out of pure interest (I'm not a software programmer): Is this feature hard to implement?