content/static/doc: copy The Go Project page (contrib.html) from Go repo

The Go Project page is copied from Go master as of 2020/04/24
(commit golang/go@ee8972c, CL 209679).

This page not closely tied to specific Go releases, and thus is better
suited to live in the x/website repo.

It will be modified in CL 229483 to use the release history data from
the internal/history package, rather than using hand-written HTML
which needs to be updated manually after each major Go release.

For golang/go#29205.
For golang/go#29206.

Change-Id: I6a6fa734fb3d873da59d67d796616fc53d684610
Reviewed-on: https://go-review.googlesource.com/c/website/+/229482
Reviewed-by: Alexander Rakoczy <alex@golang.org>

content/static/doc/contrib.html

@@ -0,0 +1,133 @@
+<!--{
+	"Title": "The Go Project",
+	"Path": "/project/"
+}-->
+
+<img class="gopher" src="/doc/gopher/project.png" />
+
+<div id="manual-nav"></div>
+
+<p>
+Go is an open source project developed by a team at
+<a href="//google.com/">Google</a> and many
+<a href="/CONTRIBUTORS">contributors</a> from the open source community.
+</p>
+
+<p>
+Go is distributed under a <a href="/LICENSE">BSD-style license</a>.
+</p>
+
+<h3 id="announce"><a href="//groups.google.com/group/golang-announce">Announcements Mailing List</a></h3>
+<p>
+A low traffic mailing list for important announcements, such as new releases.
+</p>
+<p>
+We encourage all Go users to subscribe to
+<a href="//groups.google.com/group/golang-announce">golang-announce</a>.
+</p>
+
+
+<h2 id="go1">Version history</h2>
+
+<h3 id="release"><a href="/doc/devel/release.html">Release History</a></h3>
+
+<p>A <a href="/doc/devel/release.html">summary</a> of the changes between Go releases. Notes for the major releases:</p>
+
+<ul>
+	<li><a href="/doc/go1.14">Go 1.14</a> <small>(February 2020)</small></li>
+	<li><a href="/doc/go1.13">Go 1.13</a> <small>(September 2019)</small></li>
+	<li><a href="/doc/go1.12">Go 1.12</a> <small>(February 2019)</small></li>
+	<li><a href="/doc/go1.11">Go 1.11</a> <small>(August 2018)</small></li>
+	<li><a href="/doc/go1.10">Go 1.10</a> <small>(February 2018)</small></li>
+	<li><a href="/doc/go1.9">Go 1.9</a> <small>(August 2017)</small></li>
+	<li><a href="/doc/go1.8">Go 1.8</a> <small>(February 2017)</small></li>
+	<li><a href="/doc/go1.7">Go 1.7</a> <small>(August 2016)</small></li>
+	<li><a href="/doc/go1.6">Go 1.6</a> <small>(February 2016)</small></li>
+	<li><a href="/doc/go1.5">Go 1.5</a> <small>(August 2015)</small></li>
+	<li><a href="/doc/go1.4">Go 1.4</a> <small>(December 2014)</small></li>
+	<li><a href="/doc/go1.3">Go 1.3</a> <small>(June 2014)</small></li>
+	<li><a href="/doc/go1.2">Go 1.2</a> <small>(December 2013)</small></li>
+	<li><a href="/doc/go1.1">Go 1.1</a> <small>(May 2013)</small></li>
+	<li><a href="/doc/go1">Go 1</a> <small>(March 2012)</small></li>
+</ul>
+
+<h3 id="go1compat"><a href="/doc/go1compat">Go 1 and the Future of Go Programs</a></h3>
+<p>
+What Go 1 defines and the backwards-compatibility guarantees one can expect as
+Go 1 matures.
+</p>
+
+
+<h2 id="resources">Developer Resources</h2>
+
+<h3 id="source"><a href="https://golang.org/change">Source Code</a></h3>
+<p>Check out the Go source code.</p>
+
+<h3 id="discuss"><a href="//groups.google.com/group/golang-nuts">Discussion Mailing List</a></h3>
+<p>
+A mailing list for general discussion of Go programming.
+</p>
+<p>
+Questions about using Go or announcements relevant to other Go users should be sent to
+<a href="//groups.google.com/group/golang-nuts">golang-nuts</a>.
+</p>
+
+<h3 id="golang-dev"><a href="https://groups.google.com/group/golang-dev">Developer</a> and
+<a href="https://groups.google.com/group/golang-codereviews">Code Review Mailing List</a></h3>
+<p>The <a href="https://groups.google.com/group/golang-dev">golang-dev</a>
+mailing list is for discussing code changes to the Go project.
+The <a href="https://groups.google.com/group/golang-codereviews">golang-codereviews</a>
+mailing list is for actual reviewing of the code changes (CLs).</p>
+
+<h3 id="golang-checkins"><a href="https://groups.google.com/group/golang-checkins">Checkins Mailing List</a></h3>
+<p>A mailing list that receives a message summarizing each checkin to the Go repository.</p>
+
+<h3 id="build_status"><a href="//build.golang.org/">Build Status</a></h3>
+<p>View the status of Go builds across the supported operating
+systems and architectures.</p>
+
+
+<h2 id="howto">How you can help</h2>
+
+<h3><a href="//golang.org/issue">Reporting issues</a></h3>
+
+<p>
+If you spot bugs, mistakes, or inconsistencies in the Go project's code or
+documentation, please let us know by
+<a href="//golang.org/issue/new">filing a ticket</a>
+on our <a href="//golang.org/issue">issue tracker</a>.
+(Of course, you should check it's not an existing issue before creating
+a new one.)
+</p>
+
+<p>
+We pride ourselves on being meticulous; no issue is too small.
+</p>
+
+<p>
+Security-related issues should be reported to
+<a href="mailto:security@golang.org">security@golang.org</a>.<br>
+See the <a href="/security">security policy</a> for more details.
+</p>
+
+<p>
+Community-related issues should be reported to
+<a href="mailto:conduct@golang.org">conduct@golang.org</a>.<br>
+See the <a href="/conduct">Code of Conduct</a> for more details.
+</p>
+
+<h3><a href="/doc/contribute.html">Contributing code &amp; documentation</a></h3>
+
+<p>
+Go is an open source project and we welcome contributions from the community.
+</p>
+<p>
+To get started, read these <a href="/doc/contribute.html">contribution
+guidelines</a> for information on design, testing, and our code review process.
+</p>
+<p>
+Check <a href="//golang.org/issue">the tracker</a> for
+open issues that interest you. Those labeled
+<a href="https://github.com/golang/go/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22">help wanted</a>
+are particularly in need of outside help.
+</p>

content/static/internal/gen/gen.go

@@ -43,6 +43,7 @@ var files = []string{
 	"dirlist.html",
 	"doc/code.html",
 	"doc/conduct.html",
+	"doc/contrib.html",
 	"doc/copyright.html",
 	"doc/devel/pre_go1.html",
 	"doc/devel/release.html",