do not show empty load/save dropdowns

src/app/controllers/dashLoader.js

@@ -11,9 +11,6 @@ function (angular, _) {
     $scope.loader = dashboard.current.loader;
 
     $scope.init = function() {
-      $scope.advancedLoad = false;
-      $scope.advancedSave = false;
-
       $scope.gist_pattern = /(^\d{5,}$)|(^[a-z0-9]{10,}$)|(gist.github.com(\/*.*)\/[a-z0-9]{5,}\/*$)/;
       $scope.gist = $scope.gist || {};
       $scope.elasticsearch = $scope.elasticsearch || {};

src/app/partials/dashLoader.html

@@ -28,7 +28,7 @@
       </table>
     </li>
 
-    <li class="dropdown-submenu noarrow">
+    <li class="dropdown-submenu noarrow" ng-show="dashboard.current.loader.load_gist || dashboard.current.loader.load_local">
       <a tabindex="-1" class="small" style="padding:0"><i class="icon-caret-left"></i> Advanced</a>
       <ul class="dropdown-menu" style="padding:10px">
         <li ng-show='dashboard.current.loader.load_local'>
@@ -73,7 +73,7 @@
       </form>
     </li>
 
-    <li class="dropdown-submenu noarrow">
+    <li class="dropdown-submenu noarrow" ng-show="dashboard.current.loader.save_local || dashboard.current.loader.save_gist || dashboard.current.loader.save_default">
       <a tabindex="-1" class="small" style="padding:0"><i class="icon-caret-left"></i> Advanced</a>
       <ul class="dropdown-menu">