Small improvements on the download logs button in the Iot App: - Log file contains the IoT name and date of generation - Internal server error araise if the logfile config is missing - Internal server error aised if the log file is missin Was meant to be part of: https://github.com/odoo/odoo/pull/159186 opw-3827121 closes odoo/odoo#160755 X-original-commit: a6bcfce6714c4a804fe84d81d8b9ee29c1440046 Signed-off-by: Loan Sens (lse) <lse@odoo.com>