displaying assigned domain quota

adding the amount of assigned domain quota to the disk usage display as potentially used disk space

data/web/css/site/debug.css

@@ -44,4 +44,14 @@ tbody {
 .container-indicator {
   width: 15px;
   height: 15px;
-}
+}
+.disk_space {
+    margin-top: 20px;
+}
+.progress-bar-committed {
+    background-color: #B6E1F2;
+}
+.usage-info {
+    display: inline-block;
+    margin-right: 5px;
+}