CHANGED: Update the Linux appdata file to include new tags
* Include version tags (and others) in the appdata file
* Refactor the version string generation to clean it up
The extra field metadata is not really needed nor helpful as various
other additional licenses are used within the KiCad project.
All used licenses are documented with the file LICENSE.README within top
root folder of the source.
This will ensure KiCad will be easily installable from the app stores such
as GNOME Software.
The screenshots probably need a better home. Not that it would matter
too much -- the Linux distributions do cache them with their feeds, so
the app store applications don't access them from this source directly.
Screenshots from the web [1] can't be used since they are too large for
use in the app store application. :(
[1] http://kicad-pcb.org/discover/screenshots/
Fixes lp:1323789
https://bugs.launchpad.net/kicad/+bug/1323789
Ian McInerney
Wayne Stambaugh
Carsten Schoenert
Seth Hillbrand
Marco Ciampa
Lubomir Rintel