security: use more antiforgery tokens

Disco.Web/Areas/Config/Views/Export/_Edit.cshtml

@@ -1,5 +1,5 @@
 @model Disco.Web.Areas.Config.Models.Export.EditModel
-@using (Html.BeginForm(MVC.API.Export.Update(), FormMethod.Post))
+@using (Html.BeginForm(MVC.API.Export.Update()))
 {
     @Html.AntiForgeryToken();
     @Html.HiddenFor(m => m.Id)
@@ -199,7 +199,7 @@
                 <i class="fa fa-exclamation-triangle"></i>Are you sure you want to delete the Saved @Model.ExportTypeName: @Model.Name?
             </p>
         </div>
-        @using (Html.BeginForm(MVC.API.Export.Delete(), FormMethod.Post))
+        @using (Html.BeginForm(MVC.API.Export.Delete()))
         {
             @Html.AntiForgeryToken()
             <input type="hidden" name="id" value="@Model.Id" />