Remove standard mailer port lines

The User member of a message is not needed anymore.

The from that is send to the server, should always be the "system" from. This is also called the Bounce address http://en.wikipedia.org/wiki/Bounce_address

This lines got committed by accident. They do actually nothing, as SplitHostPort will give an error if port is not given.

Crammd5

Rewrite of SendMail function

The SendMail function is rewritten and has the following new functionality:
 - It is optional to skip verification of keys. The config option SKIP_VERIFY is added
 - If the port is 465, or ending on 465, the TLS(/SSL) connection is started first.

All basics are implemented. Missing are the right (localized) strings
and the page markup could have a look at by a frontend guy.

A new struct is created named EmailAddress that contains alternative
email addresses for users. Also the email related methods; IsEmailUsed
and GetUserByEmail are updated.

DeleteUser deletes the extra email addresses and DeleteInactivateUsers
also deletes inactive accounts. This could be factored out, but should
do it for now.

- POST /user/repos
- POST /org/:org/repos

increase minimum version for HTTPS to TLS 1.0 (POODLE, fixes #730)

Correction for #723

Correction for #723
Bug was : decode failed if the password contains ```:```

Allow send mail without authentication if SMTP server allow this

Fix spelling errors in comments.