dashlist: change scrollbar to new perfect scroll directive

public/app/features/dashboard/partials/dashboardList.html

-<div class="scroll-canvas">
-  <div gemini-scrollbar>
+<div class="scroll-canvas" grafana-scrollbar>
   <navbar model="ctrl.navModel"></navbar>
   <div class="page-container" style="height: 95%">
     <div class="page-header">
@@ -51,23 +50,24 @@
       </div>
     </div>
 
-        <div style="height: 80%">
-          <div style="width: 40%; display: flex; float: right;">
+      <div style="height: 75%">
+        <div style="display: flex; justify-content: flex-end">
           <select
+            style="width: 150px;"
             class="gf-form-input"
             ng-model="ctrl.selectedStarredFilter"
             ng-options="t.text disable when t.disabled for t in ctrl.starredFilterOptions"
             ng-change="ctrl.onStarredFilterChange()"
           />
           <select
+            style="width: 150px;"
             class="gf-form-input"
             ng-model="ctrl.selectedTagFilter"
             ng-options="t.term disable when t.disabled for t in ctrl.tagFilterOptions"
             ng-change="ctrl.onTagFilterChange()"
           />
         </div>
-          <div gemini-scrollbar>
-            <div class="search-results-container" ng-show="ctrl.sections.length > 0">
+        <div class="search-results-container" ng-show="ctrl.sections.length > 0" grafana-scrollbar>
           <div ng-repeat="section in ctrl.sections" class="search-section">
 
             <div class="search-section__header__with-checkbox" ng-hide="section.hideHeader">
@@ -111,7 +111,6 @@
               </div>
             </div>
           </div>
-            </div>
 
             <!-- <div bindonce class="search-section" ng-repeat="dashboard in ctrl.dashboards">
                 <gf-form-switch
@@ -144,7 +143,5 @@
       No Dashboards or Folders found.
     </em>
   </div>
-
-  </div>
 </div>