[API] Add commit show call

Created by: dzaporozhets

Given a mobile application using API client When I call commit json Then I should see list of chaged files And I should see text of changes And I should see commit details

Created by: dosire

Moved to http://feedback.gitlab.com/forums/176466-general/suggestions/3788030-the-api-should-support-showing-commit-details

By Administrator on 2013-03-27T08:45:16 (imported from GitLab)