Merge branch 'master' of gitlab.com:gitlab-org/gitlab-ce

CHANGELOG

app/assets/javascripts/dispatcher.js.coffee

app/assets/javascripts/issue.js.coffee

app/assets/javascripts/merge_request.js.coffee

app/assets/stylesheets/generic/common.scss

app/controllers/namespaces_controller.rb

app/helpers/gitlab_routing_helper.rb

app/models/concerns/mentionable.rb

app/views/dashboard/milestones/_milestone.html.haml

app/views/dashboard/milestones/index.html.haml

app/views/groups/milestones/_milestone.html.haml

app/views/groups/milestones/index.html.haml

app/views/projects/milestones/_milestone.html.haml

app/views/projects/refs/logs_tree.js.haml

app/views/users/_projects.html.haml

app/views/users/show.html.haml

config/gitlab.yml.example

doc/customization/issue_closing.md

lib/api/branches.rb

lib/gitlab/markdown.rb