docs: add "page source" link to sphinx documentation

Add a link to the top of the sidebar in every docs page that takes the
user back to the source code in gitlab.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20201102130926.161183-5-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

docs/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>

docs/conf.py

@@ -177,6 +177,7 @@
 html_sidebars = {
     '**': [
         'about.html',
+        'editpage.html',
         'navigation.html',
         'searchbox.html',
     ]

docs/devel/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/devel/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>

docs/interop/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/interop/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>

docs/specs/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/specs/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>

docs/system/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/system/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>

docs/tools/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/tools/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>

docs/user/_templates/editpage.html

@@ -0,0 +1,5 @@
+<div id="editpage">
+  <ul>
+    <li><a href="https://gitlab.com/qemu-project/qemu/-/blob/master/docs/user/{{pagename}}.rst">Page source</a></li>
+  </ul>
+</div>