Merge branch 'master' into issue-board-sidebar

.gitattributes

.gitlab-ci.yml

.gitlab/merge_request_templates/Documentation.md

.scss-lint.yml

.vagrant_enabled

CHANGELOG.md

CONTRIBUTING.md

GITLAB_SHELL_VERSION

GITLAB_WORKHORSE_VERSION

Gemfile

Gemfile.lock

README.md

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app/assets/javascripts/api.js