FIX: remove limit when exporting to CSV

plugin.rb

@@ -926,6 +926,8 @@ SQL
 
       opts = { current_user: current_user.username }
       opts[:explain] = true if params[:explain] == "true"
+
+      opts[:limit] = "ALL" if params[:format] == "csv"
       opts[:limit] = params[:limit].to_i if params[:limit]
 
       result = DataExplorer.run_query(query, query_params, opts)