* Added a status page that shows all the currently executing build steps.

* Store the system type in the BuildSteps table.
* Don't query the queue size when serving static pages.  This prevents
  two unnecessary database queries per request.

src/root/static/css/hydra.css

@@ -53,10 +53,15 @@ tr.clickable:hover {
     background-color: #E6EEFF;
     cursor: pointer;
 }
+
 td.centered {
     text-align: center;
 }
 
+td.right {
+    text-align: right;
+}
+
 
 .layoutTable td, .layoutTable th {
     border-style: none;