Remove double slashes in directives (fixes #2143)

gui/syncthing/folder/editFolderModalDirective.js

@@ -2,6 +2,6 @@ angular.module('syncthing.folder')
     .directive('editFolderModal', function () {
         return {
             restrict: 'A',
-            templateUrl: 'syncthing/folder//editFolderModalView.html'
+            templateUrl: 'syncthing/folder/editFolderModalView.html'
         };
 });

gui/syncthing/folder/editIgnoresModalDirective.js

@@ -2,6 +2,6 @@ angular.module('syncthing.folder')
     .directive('editIgnoresModal', function () {
         return {
             restrict: 'A',
-            templateUrl: 'syncthing/folder//editIgnoresModalView.html'
+            templateUrl: 'syncthing/folder/editIgnoresModalView.html'
         };
 });