[aur-general] Merge Request: zeitgeist-dataprovider-firefox => zeitgeist-datasource-firefox

[郑文辉(Techlive Zheng)]

[zeitgeist-dataprovider-firefox][1] is orphaned and obsoleted long
ago, it is actually a bzr package  but with a unqualified name, and
the source is dead.

 [zeitgeist-datasource-firefox][2] provides the same thing using a
released tarball.

[1]: https://aur.archlinux.org/packages/zeitgeist-dataprovider-firefox/
[2]:https://aur.archlinux.org/packages/zeitgeist-datasource-firefox/