Test email even without database

There is no need for a database to test email sending from trytond-admin. Also if there are many databases provided, it send a testing email for each one.

assigned to @ced

added trytond type::behavior + 1 deleted label

added 1 deleted label and removed 1 deleted label

New review363031003 at https://codereview.tryton.org/363031003/#ps374021006

New changeset 7b8eada9d9ef by Cédric Krier in branch 'default':
Send testing email without database
https://hg.tryton.org/trytond/rev/7b8eada9d9ef

added 1 deleted label and removed 1 deleted label

closed

New changeset fe2c969fe077 by Cédric Krier in branch 'default':
Send testing email without database
https://hg.tryton.org/tryton-env/rev/fe2c969fe077