Flip the ordering that merge is presented: merge the current record into another, instead of merging another record into the current.
Show the "Merge" button in the edit forms of subjects and agents too.
Use the right permission to decide whether to show delete buttons
Patch form.js so a change of an input field triggers the formchanged.aspace event (fixes an issue where the tree and other widgets rely on this event to be triggered on the form)