fixed alignment in search + fixed issue ie popup

public/app/features/dashboard/unsaved_changes_srv.ts

@@ -35,12 +35,12 @@ export class Tracker {
 
     $window.onbeforeunload = () => {
       if (this.ignoreChanges()) {
-        return null;
+        return undefined;
       }
       if (this.hasChanges()) {
         return 'There are unsaved changes to this dashboard';
       }
-      return null;
+      return undefined;
     };
 
     scope.$on('$locationChangeStart', (event, next) => {

public/sass/components/_search.scss

@@ -31,7 +31,6 @@
     //padding: 0.5rem 1.5rem 0.5rem 0;
     padding: 1rem 1rem 0.75rem 1rem;
     height: 51px;
-    line-height: 51px;
     box-sizing: border-box;
     outline: none;
     background: $side-menu-bg;