The capture file properties dialog already lists the section
comments in the Details section, so it wastes some space to have
them a second time in the edit box.
Have an edit dialog for the capture comments. Have the edit dialog
use tabs so that we can edit multiple comments in a section, and
all sections. Allow adding new comments, removing comments, and
reordering comments.
Fix a few small leaks.
Related to #14599, #16133.
John Thacker