Mail to users

[Jakub Zych]

Currently mailer sends mails to e-mail provided in settings only.

It should also send e-mail to service owner, if owner enabled that in profile (probably email_notification field in monitorprofile) and service has alerts enabled.

• Add email_notification boolean to monitorprofile
• Add send_email field to edit / create forms.
• Add sending to users in MailSender class

[Jakub Zych]

user mailing. fixes #3

→ <<cset 0be8ec765e91>>