Add option to add issue comment with commit message.
I would like to have the ability to comment on issues from within commit messages. This would be to delegate issues to someone. For example, Code Validator creates issue gitlab-ce#1 and delegates to person @main-dev for solving. This is all clear. Then main-dev generates commit message, something like: "commit -m "Blablabla, this closes gitlab-ce#1. Ready for @main-dev for validation." The syntax can be discussed. I wouldl ike as a result of this commit message for the issue to show up in validator's todo list.