Point to the new mailing list by replacing the old link

Changed files
+3 -3
doc
nixos
doc
manual
+1 -1
README.md
···
Communication:
-
* [Mailing list](http://lists.science.uu.nl/mailman/listinfo/nix-dev)
+
* [Mailing list](https://groups.google.com/forum/#!forum/nix-devel)
* [IRC - #nixos on freenode.net](irc://irc.freenode.net/#nixos)
+1 -1
doc/quick-start.xml
···
<listitem>
<para>Optionally commit the new package and open a pull request, or send a patch to
-
<literal>nix-dev@cs.uu.nl</literal>.</para>
+
<literal>https://groups.google.com/forum/#!forum/nix-devel</literal>.</para>
</listitem>
+1 -1
nixos/doc/manual/manual.xml
···
<para>If you encounter problems, please report them on the
<literal
-
xlink:href="http://lists.science.uu.nl/mailman/listinfo/nix-dev">nix-dev@lists.science.uu.nl</literal>
+
xlink:href="https://groups.google.com/forum/#!forum/nix-devel">nix-devel</literal>
mailing list or on the <link
xlink:href="irc://irc.freenode.net/#nixos">
<literal>#nixos</literal> channel on Freenode</link>. Bugs should