add extra space in button (#371)

add 2 extra spaces in "create" and "cancel" buttons in `tab_analytics.html`

src/panel/graph_panel/partials/tab_analytics.html

@@ -44,7 +44,7 @@
         ng-if="!ctrl.analyticsController.saving"
       >
         <i class="fa fa-plus"></i>
-        Create
+        &ensp;Create
       </button>
       <button
         class="btn btn-secondary width-12"
@@ -61,7 +61,7 @@
         ng-disabled="ctrl.analyticsController.saving"
       >
         <i class="fa fa-ban"></i>
-        Cancel
+        &ensp;Cancel
       </button>
     </div>
     <div class="gf-form-button-row" ng-if="ctrl.analyticsController.analyticUnits.length > 0">