Create a Mail dispatcher

[ejhernandez@…]

In order to send events using SMTP, we require to create a Mail dispatcher which mails to the admin account using eBox smarthost :) or an external one.

[ejhernandez@…]

(In [8929]) First untested version for mail dispatcher with its own configuration. Added libnet-smtp-tls-perl dependency from our extra repository refs #893

[ejhernandez@…]

(In [8930]) Tested mail configuration. It works but some parameters need to be tuned not to be denied by smtp servers refs #893

[ejhernandez@…]

(In [8931]) Added disabled parameter to use in subtypes of a Union type. Added allowUnsafeChars to let unsafe chars be a value of an instanced type. EBox::Types::Text with a longer size than 40 chars will use a textarea setter. New framework features used in refs #893

[ejhernandez@…]

(In [8933]) Move mail dispatcher to mail module since only our configured smtp mail sends the events refs #893

[ejhernandez@…]

(In [8934]) Removing mail dispatcher since now it places on mail module refs #893

[ejhernandez@…]

(In [8935]) Remove Net::SMTP::TLS dependency since it is connecting using loopback that is secure by nature refs #893

[ejhernandez@…]

(In [8937]) Fixing small bugs closes #893 (spent 9)