Replace astor_new_server_wizard.swf

[piogor]

Hello, I am still preparing the Debian package :)

Thanks!

I have these errors via lintian

E: tango source: source-is-missing doc/html/_static/astor_new_server_wizard.swf

do you have the source of this swf file ?

This is a very old file. It seems it was some kind of video showing the wizard in action.
We don't have the sources and it even doesn't seem to work anymore:
https://tango-controls.readthedocs.io/en/latest/tools-and-extensions/built-in/astor/new_server_wizard.html

This should be removed, or better, replaced with something else (series of pictures? Animated image?)...
@piogor, could you please take care of that?