Show full commit message and author name for Email on push service

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'email-service-full-commit-message' into 'master'

Show full commit message and author name for Email on push service

Fixed #1305

![Screenshot 2014-07-04 17.42.47](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/55696faea6/Screenshot_2014-07-04_17.42.47.png)

See merge request !949