1.1.0 not fully ready for GLPI 0.78+
The add phoneline form does not include some fields and the submit button due to the following error:
PHP Fatal error: Class 'PluginTlflinesTlflinesRoamingbono' not found in inc/db.function.php on line 266
This is because it's now needed to use singular form for such classes.
Attached patches fix this.