[gfsd]display-entry.py has an assumed precondition bug

[Bradley M. Kuhn]

display-entry.py assumes that the category_id number 1 is the very top
category.  It's easy to test.  Try to give a different category in the
database the number 1.  The front page at www.gnu.org/directory/, with no
args, becomes whatever category number 1 is.


This assumption should be removed.  It cannot be guaranteed that the
toplevel category has ID "1".  You can assume that its parent_id is
NULL.  I suppose we can assume there is only one toplevel category, but
that seems dangerous too...


   -- bkuhn

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