Update user docs to link to GNOME Gitlab instead of Bugzilla
$:acko\> pwd
~/GNOME/gnumeric/doc/C
$:acko\> grep -r ugzilla .
./about-authors.xml: Either via the <ulink url="http://bugzilla.gnome.org/enter_bug.cgi?product=Gnumeric" type="http">web</ulink>.
./welcome.xml: bugzilla database. This list can be accessed using <ulink
./welcome.xml: url="http://bugzilla.gnome.org/buglist.cgi?product=Gnumeric&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=NEEDINFO&bug_status=REOPENED&order=bugs.bug_id">this
./welcome.xml: bugzilla query</ulink>.
./gui-menus.xml: browser and open the page on GNOME's Bugzilla bug
./Localwords:bugzilla
./ChangeLog: * Refer to the chapter on reporting problems rather than to bugzilla
./ChangeLog: * bugs.xml: Reorganize. Finish bugzilla instructions.
./programing.xml: bugzilla
./bugs.xml: web system called <application>Bugzilla</application> to collect
./bugs.xml: <application>Bugzilla</application> system. Finally, the user must
./bugs.xml: instructions, the main page of GNOME's bugzilla can be found at
./bugs.xml: <ulink type="http" url="http://bugzilla.gnome.org/">
./bugs.xml: <uri>http://bugzilla.gnome.org/</uri>
./bugs.xml: <ulink type="http" url="http://bugzilla.gnome.org/bug-HOWTO.html">
./bugs.xml: <uri>http://bugzilla.gnome.org/bug-HOWTO.html</uri>
./bugs.xml:<sect1 id="sect-bugs-bugzilla_account">
./bugs.xml: The first time a user uses <application>Bugzilla</application>,
./bugs.xml: requirement for opening a <application>Bugzilla</application>
./bugs.xml: <sect2 id="sect-bugs-bugzilla_account-create">
./bugs.xml: Users of <application>Bugzilla</application> are automatically
./bugs.xml: url="http://bugzilla.gnome.org/createaccount.cgi">link</ulink>,
./bugs.xml: <sect2 id="sect-bugs-bugzilla_account-login">
./bugs.xml: url="http://bugzilla.gnome.org/enter_bug.cgi?product=Gnumeric">page
./bugs.xml: password. After logging in, <application>Bugzilla</application>
./bugs.xml: A user who accepts cookies from <literal>bugzilla.gnome.org</literal>
./bugs.xml: GNOME's <application>Bugzilla</application>. During all future
./bugs.xml: <application>Bugzilla</application> account is
./bugs.xml: linkend="sect-bugs-bugzilla_account" />, for an explanation of
./bugs.xml: <sect2 id="sect-bugs-bugzilla_access">
./bugs.xml: <title>Accessing the GNOME project's Bugzilla</title>
./bugs.xml: <application>Bugzilla</application>.
./bugs.xml: <application>Bugzilla</application> to the
./bugs.xml: url="http://bugzilla.gnome.org/enter_bug.cgi?product=Gnumeric">
./bugs.xml: page in <application>Bugzilla</application>.
./bugs.xml:<screen>http://bugzilla.gnome.org/enter_bug.cgi?product=Gnumeric
./bugs.xml: <application>Bugzilla</application>. See <xref
./bugs.xml: linkend="sect-bugs-bugzilla_account-login" /> for an explanation
./bugs.xml: of how to login to <application>Bugzilla</application>.
./bugs.xml: <application>Bugzilla</application> is used for all the different
./bugs.xml: <application>Bugzilla</application>, once all of the important
./bugs.xml: url="http://bugzilla.gnome.org/userprefs.cgi">here</ulink> at the
./bugs.xml:<screen>http://bugzilla.gnome.org/userprefs.cgi
./bugs.xml: these values". <application>Bugzilla</application> will then
./bugs.xml: page of <application>Bugzilla</application> with the common
$:acko\>