Admin::Mailer.reset_password_instructions with host
Moving an item position validates it.

https://github.com/swanandp/acts_as_list/commit/7f4678f5d0277740a7d3ea540cbbe4259d16175a#L0R208
This fixes tests!

For some reason this is commented. Maybe because of Travis-CI failing
when running tests. For the moment we will take this back.
Bumped gems and fixed mocha deprecation warning.
Updated CHANGELOG