Update the old logo with a simplified one without extra label text.
.ico and .icns are updated on Windows and macOS, and .png, .svg
are added on Linux and FreeBSD.
Original logo design by Andreas Becker, recreated by danielwerg with
some edits and symbolic version by me.
This patch moves away from gnome-terminal -e options which is deprecated
and subject to possibly be removed in the future. The -- option is nearly
equivalent in behaviour. Also ensures that uninstallation script has correct
privileges, adds window title to xmessage and ensures correct files are
used during installation.
The x11 aliases such as --title are only available in the Qt application
if the XDG_SESSION_TYPE is x11. Instead of using an alias, we can use
--qwindowtitle directly.
Mounir IDRASSI
Jertzukka
Mounir IDRASSI