fixed breaking bug in job history and fixed accordion style (#2138)

src/sql/parts/jobManagement/common/media/jobs.css

@@ -421,3 +421,7 @@ jobsview-component .jobview-grid .slick-cell.error-row {
 .jobproxiesview-grid > .monaco-table .slick-header-columns .slick-resizable-handle {
     border-left: 1px dotted #444444;
 }
+
+.overview-container > .overview-tab > label {
+    margin-bottom: 0px;
+}

src/sql/parts/jobManagement/views/jobHistory.component.ts

@@ -120,7 +120,11 @@ export class JobHistoryComponent extends JobManagementView implements OnInit {
 			} else {
 				tree.setFocus(element, payload);
 				tree.setSelection([element], payload);
-				self.setStepsTree(element);
+				if (element.rowID) {
+					self.setStepsTree(element);
+				} else {
+					event.preventDefault();
+				}
 			}
 			return true;
 		};