[repo] reflect name and domain change in our repo addons

Only merge when @kib is done with the domains.

Edit:
also changed the addon ID of the repos. Needs checking on all platforms if it won't cause double repo installs.
@Jalle19 Right.

@MartijnKaijser The original is OK, but changing xbmc.org=>kodi.tv requires slightly modifying the suffix (which denotes "from") as well so just a straight replace does not work.

Not sure if other languages are affected similarly, maybe Basque, Hungarian, Mongolian or Turkish which seem to have some kind of suffixes in there...