legacy node doesn't work any more.

based on https://github.com/owncloud/mail/graphs/contributors
and https://github.com/owncloud/mail/graphs/contributors?from=2014-08-03&to=2016-08-02&type=c for the active ones

also drop the table `oc_mail_collected_addresses`.

* log SMTP communication #1392

I copied the thing form imap and changed it. After I try it I noticed it would be better to split the logs. So one for imap and one for smtp.

* additional to my commit form log SMTP communication

Necessary changes for the issue_template that would incur by splitting the horde logs.

* Update issue_template.md

* additional to my commit form log SMTP communication

Necessary changes for the readme that would incur by splitting the horde logs.

the 'owncloud-mail' org was deleted

As discussed with @Gomez on IRC, I created a bountysource org for this app

fixes #1184

delete obsolete ubuntu install file
use Makefile on travis

Update #2

Improved according to @jancborchardt

Release Candidate

Preview

-Removed the "dedicated email server" dream stuff.
-Moved Maintainer Jakob Sack to active (YEAH!)

Preview #02

-Fixed "&" before Jacob Sack
-Removed "Basic IMAP Client" stuff (because of the "dedicated-mailserver" is removed)

According to https://github.com/owncloud/mail/pull/1070#issuecomment-139890889

Minor change --> merge

updated the archive type as it´s a tar.gz and not a zip

I give up on how to rebase and squash the commits in https://github.com/owncloud/mail/pull/1066. This PR is exactly the same and already approved. So I´ll merge this and close the other.

Fixes #1061