use pipe as a csv separator

outputdialog.cpp

@@ -88,7 +88,7 @@ void OutputDialog::on_buttonBox_accepted() {
                     }
 
                 if (i < columns->size() - 1) {
-                    output_file << ",";
+                    output_file << "|";
                 } else {
                     output_file << "\n";
                 }
@@ -124,7 +124,7 @@ void OutputDialog::print_header(std::ofstream *output_file) {
             (*output_file) << column.get_text().toStdString()
                         << (i == columns->size() - 1
                                 ? ""
-                                : ",");
+                                : "|");
         }
         *output_file << std::endl;
     }