wui: reorganize the welcome.xhtml page

Jake Edge tried Tahoe out and didn't notice the /status page.  Hopefully with this new organization people like he will see that link more easily.  This also addresses drewp's suggestion that the controls appear above the list of servers instead of below.  (I think that was his suggestion.)  I also reordered the controls.

src/allmydata/web/welcome.xhtml

@@ -10,19 +10,26 @@
 
 <h1>Welcome To AllMyData "Tahoe"!</h1>
 
-<div>Please visit the <a href="http://allmydata.org">Tahoe home page</a> for
-code updates and bug reporting. The <a href="provisioning">provisioning
-tool</a> may also be useful. <a href="status/">Current Uploads and
-Downloads</a></div>
-
-<h2>Grid Status</h2>
+<h2>Status of this Client</h2>
 
 <div>My nodeid: <span n:render="string" n:data="my_nodeid" /></div>
 <div>My versions: <span n:render="string" n:data="version" /></div>
 <div>Tahoe code imported from: <span n:render="string" n:data="import_path" /></div>
 <div n:render="services">Services Running:</div>
 
-<br />
+<div><a href="status/">Uploads and Downloads</a></div>
+
+<h2>The Controls</h2>
+
+<div>There are also controls for each directory on that directory's page.</div>
+
+<div n:render="mkdir_form" />
+<div n:render="view_form" />
+<div n:render="upload_form" />
+<div n:render="download_form" />
+
+
+<h2>Status of the Storage Grid</h2>
 
 <div>Introducer: <span n:render="string" n:data="introducer_furl" /></div>
 <div>Connected to introducer?: <span n:render="string" n:data="connected_to_introducer" /></div>
@@ -57,12 +64,14 @@ Downloads</a></div>
 </table>
 </div>
 
-<br />
+<h2>Other Resources</h2>
+
+<div>Please visit the <a href="http://allmydata.org">Tahoe home page</a> for
+  code updates and bug reporting.</div>
+
+<div>The <a href="provisioning">provisioning
+    tool</a> may also be useful.</div>
 
-<div n:render="download_form" />
-<div n:render="view_form" />
-<div n:render="upload_form" />
-<div n:render="mkdir_form" />
 
   </body>
 </html>