Add subtasks drag and drop

assets/css/src/table.css

@@ -62,7 +62,7 @@ th a:hover {
     text-overflow: ellipsis;
 }
 
-.table-stripped tr:nth-child(odd) td {
+.table-stripped tr:nth-child(odd) {
     background: #fefefe;
 }
 
@@ -124,4 +124,38 @@ th a:hover {
 
 .column-70 {
     width: 70%;
-}
+}
+
+.draggable-row-handle {
+    cursor: move;
+    color: #dedede;
+}
+
+.draggable-row-handle:hover {
+    color: #333;
+}
+
+tr.draggable-item-selected {
+    background: #fff;
+    border: 2px solid #666;
+    box-shadow: 4px 2px 10px -4px rgba(0,0,0,0.55);
+}
+
+tr.draggable-item-selected td {
+    border-top: none;
+    border-bottom: none;
+}
+
+tr.draggable-item-selected td:first-child {
+    border-left: none;
+}
+
+tr.draggable-item-selected td:last-child {
+    border-right: none;
+}
+
+.table-stripped tr.draggable-item-hover,
+tr.draggable-item-hover {
+    background: #FEFFF2;
+}
+