Add Maintenance Latest

Cask added for [Titanium Software's](http://www.titanium.free.fr/) freeware utility [Maintenance](http://www.titanium.free.fr/downloadmaintenance.php).

**N.B.:** requires [this PR](https://github.com/caskroom/homebrew-cask/pull/6487) to be deployed prior otherwise [line 23](https://github.com/alexcruice/homebrew-cask/blob/be9fe59bd83d584c2d5d71cdcbda6830fc22f03c/Casks/maintenance.rb#L23) will cause an issue.

> Maintenance is a system maintenance and cleaning utility for OS X which allows you to run miscellaneous tasks of system maintenance: repair permissions, run periodic scripts, reset Spotlight’s Index, rebuild the LaunchServices database, delete Application, Font and System cache, check the status of the hard disk, and more.

![6_10_2014_7_15_am](https://cloud.githubusercontent.com/assets/3786095/4519982/b5c16904-4cd4-11e4-8725-28630b6d5d39.png)