Fix backend index table sorting

app/controllers/admin/archive_files_controller.rb

@@ -1,7 +1,7 @@
 class Admin::ArchiveFilesController < OrbitAdminController
 
   def index
-  	@table_fields = ["Status","Category","Title"]
+  	@table_fields = [:status, :category, :title]
     @categories = @module_app.categories
     @tags = @module_app.tags
      @filter_fields = {