Merge pull request #119 from gitlabhq/6-2-stable

6 2 stable
Use gitlab-shell 1.7.4
Merge pull request #121 from gitlabhq/6-2-stable

6 2 stable
Merge branch 'gitlab_shell_174_for_6_2_stable' of /home/git/repositories/gitlab/gitlabhq into 6-2-stable
Merge pull request #124 from gitlabhq/6-2-stable

6 2 stable
Version 6.2.3

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge pull request #127 from gitlabhq/6-2-stable

Version 6.2.3
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