be included in the extension (Loading js hosted on other sites is not
allowed on Wikipedia in order to protect user privacy)
That is very hard. I have
no access to the GeoGebra JS, although it
is basically open source. This is in contradiction to the concepts
to get always
the newest version.
This is definitely a hard requirement. We need all code loaded by
Wikipedia and friends to be in in the repo, to ensure that other sites
or deliver malicious content. Well I'm sure that GeoGebra would not do
either of those things, the general principle is that we want to be
sure to be in control of all code, so that we know for sure we would
never have to worry about that sort of thing.
let me summarize:
* The problem how to embed GeoGebra into a Mediawiki is technically
solved. The solution is tested on different wikis and has been
refined over years.
* Installing the GeoGebra extension at Wikipedia should be a
win-win situation: Wikipedia could be improved by many dynamic
geometric drawings instead of static pictures. GeoGebra could
improve its publicity.
* Nevertheless the GeoGebra extension may not be installed at Wikipedia
for security reasons (and avoiding inappropriate analytics).
On Friday 03/04/2016 I visited the ZUM workshop  at Schweinfurt, Germany.
ZUM = Zentrale für Unterrichtsmedien im Internet 
The OER-AWARD 2016 was awarded to the ZUM Wiki at Berlin. , 
I had the opportunity for some talks with other members of ZUM, and finally
made up my mind:
* I am no member of the GeoGebra team.
* I am no Mediawiki hacker and no member of Wikimedia.
* It should be easier for the GeoGebra team and the Mediawiki team to
collaborate directly and solve the security issue problem.
* I will stop my personal efforts to get GeoGebra into Wikipedia.