Add global Gantt chart for all projects

assets/css/src/gantt.css

@@ -71,9 +71,18 @@ div.ganttview-vtheader-series-name a {
 }
 
 div.ganttview-vtheader-series-name a:hover {
+    color: #333;
     text-decoration: underline;
 }
 
+div.ganttview-vtheader-series-name a i {
+    color: #000;
+}
+
+div.ganttview-vtheader-series-name a:hover i {
+    color: #666;
+}
+
 /* Slider */
 div.ganttview-slide-container {
     overflow: auto;
@@ -108,6 +117,9 @@ div.ganttview-block {
     background-color: #E5ECF9;
     border: 1px solid #c0c0c0;
     border-radius: 3px;
+}
+
+.ganttview-block-movable {
     cursor: move;
 }