use pointer cursor for buttons in query editor

public/app/plugins/datasource/postgres/partials/query.editor.html

@@ -106,20 +106,20 @@
       </div>
     </div>
     <div class="gf-form">
-      <label class="gf-form-label query-keyword" ng-click="ctrl.toggleEditorMode()">
+      <label class="gf-form-label query-keyword pointer" ng-click="ctrl.toggleEditorMode()">
         <span ng-show="ctrl.target.rawQuery">Query Builder</span>
         <span ng-hide="ctrl.target.rawQuery">Edit SQL</span>
       </label>
     </div>
     <div class="gf-form">
-      <label class="gf-form-label query-keyword" ng-click="ctrl.showHelp = !ctrl.showHelp">
+      <label class="gf-form-label query-keyword pointer" ng-click="ctrl.showHelp = !ctrl.showHelp">
         Show Help
         <i class="fa fa-caret-down" ng-show="ctrl.showHelp"></i>
         <i class="fa fa-caret-right" ng-hide="ctrl.showHelp"></i>
       </label>
     </div>
     <div class="gf-form" ng-show="ctrl.lastQueryMeta">
-      <label class="gf-form-label query-keyword" ng-click="ctrl.showLastQuerySQL = !ctrl.showLastQuerySQL">
+      <label class="gf-form-label query-keyword pointer" ng-click="ctrl.showLastQuerySQL = !ctrl.showLastQuerySQL">
         Generated SQL
         <i class="fa fa-caret-down" ng-show="ctrl.showLastQuerySQL"></i>
         <i class="fa fa-caret-right" ng-hide="ctrl.showLastQuerySQL"></i>