Move github/ under on/ (#80)

This paves the way for adding new social networks. By putting these
under their own namespace we remove clutter from the top-level
namespace, which is for Gittip users. What if GitHub wants an account on
Gittip? :-)

www/%participant_id/index.html

@@ -49,7 +49,7 @@
     login = participant['user_info'].get('login')
     if login is None:
         raise Response(404)
-    request.redirect('/github/%s/' % login)
+    request.redirect('/on/github/%s/' % login)
 
 if not user.ANON:
     if user.id == username:

www/assets/%version/gittip.js

@@ -622,7 +622,7 @@ Gittip.initJumpToPerson = function()
         e.preventDefault();
         e.stopPropagation();
         if (val !== '')
-            window.location = '/github/' + val + '/';
+            window.location = '/on/github/' + val + '/';
         return false;
     }
     $('#jump').submit(jump);

www/github/%login/index.html → www/on/github/%login/index.html

@@ -152,7 +152,7 @@ <h2 class="first"><b>{{ name }}</b> is an {{ usertype }} on GitHub.</h2>
         <tr class="not-over"><td>
             {% if not user.ANON %}
             <th>
-                <a href="/github/{{ member['login'] }}/"><img src="{{ member.get('avatar_url', '/assets/%s/no-avatar.png' % __version__) }}" />
+                <a href="/on/github/{{ member['login'] }}/"><img src="{{ member.get('avatar_url', '/assets/%s/no-avatar.png' % __version__) }}" />
                     {{ member['login'] }}</a>
             </th>
             <td>
@@ -170,7 +170,7 @@ <h2 class="first"><b>{{ name }}</b> is an {{ usertype }} on GitHub.</h2>
             </td>
             {% else %}
             <td>
-                <a href="/github/{{ member['login'] }}/"><img src="{{ member.get('avatar_url', '/assets/%s/no-avatar.png' % __version__) }}" />
+                <a href="/on/github/{{ member['login'] }}/"><img src="{{ member.get('avatar_url', '/assets/%s/no-avatar.png' % __version__) }}" />
                     {{ member['login'] }}</a>
             </td>
             {% end %}