fixes #587 by making uniqe ids more unique

For environments like mentioned in the docs:
http://www.php.net/manual/en/function.uniqid.php#refsect1-function.uniqid-notes
> Under Cygwin, the more_entropy must be set to TRUE for this function to work.
this method will just return the same result if called again in the same mikrosecond
Allow setting of Swiftmailer options in config.yml. Fixes #501.

Thanks, @doertedev and @ntomka
Updating Redirector to version 0.9.
Merge pull request #594 from karfau/patch-1

fixes #587 by making uniqe ids more unique
Merge remote-tracking branch 'upstream/master'