Bug#1104340: Missing Summary in desktop file

[asciiwolf at seznam.cz]

Package: dhewm3-d3xp
Version: 1.5.4+dfsg-1

The dhewm3-d3xp does not seem to have a Summary tag in its desktop file. 
This causes the AppStream metadata generation to fail for this package and 
the package to be missing in package management GUIs such as GNOME Software 
or KDE Discover. Please, consider adding the "Summary=" field.

https://appstream.debian.org/sid/contrib/issues/dhewm3-d3xp.html