godoc: support for title and subtitle headers when serving .html docs

and use it to show version (date) of go spec

Fixes issue 68.

R=rsc
CC=golang-dev, r
http://codereview.appspot.com/848042

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/godoc/godoc.html b/lib/godoc/godoc.html
index 99cd55eae..dd2179981 100644
--- a/lib/godoc/godoc.html
+++ b/lib/godoc/godoc.html
@@ -133,11 +133,18 @@
     </div>
   {.end}
 
-  <h1 id="generatedHeader">{Title|html-esc}</h1>
+  {.section Title}
+    <h1 id="generatedHeader">{@|html-esc}</h1>
+  {.end}
+  {.section Subtitle}
+    <span class="subtitle">{@|html-esc}</span>
+  {.end}
 
+  <p>
   <!-- The Table of Contents is automatically inserted in this <div>.
        Do not delete this <div>. -->
   <div id="nav"></div>
+  </p>
 
   <!-- Content is HTML-escaped elsewhere -->
   {Content}