Add a status page for administrators with the scheduler status

zoe_api/web/static/zoe.css

@@ -188,3 +188,60 @@ div.status_line {
     clear: both;
 }
 
+/* stats page */
+.node_name {
+    margin-top: 1em;
+    font-size: larger;
+}
+
+div.node_detail div.memory_total,
+div.node_detail div.cores_total {
+    border: 1px solid black;
+    background-color: green;
+    width: 100%;
+    position: relative;
+    z-index: 0;
+}
+
+div.node_detail div.memory_reserved,
+div.node_detail div.cores_reserved {
+    background-color: red;
+    display: inline-block;
+    left: 0;
+    z-index: 2;
+    position: relative;
+    float: left;
+}
+div.node_detail div.memory_total span,
+div.node_detail div.cores_total span {
+    text-align: end;
+    width: 100%;
+    position: relative;
+    left: 0;
+    display: block;
+    z-index: 1;
+}
+
+div.scheduler_queue {
+    display: flex;
+    overflow: auto;
+}
+
+div.queue_item {
+    margin-right: 5px;
+    flex: none;
+}
+
+div.service {
+    border: 1px dashed red;
+    margin-top: 3px;
+    padding: 5px;
+}
+
+div.essential {
+    border-style: solid;
+}
+
+div.running {
+    border-color: green;
+}