Add latest changes from gitlab-org/gitlab@master

.gitattributes

.gitlab/ci/docs.gitlab-ci.yml

.gitlab/ci/frontend.gitlab-ci.yml

.gitlab/ci/global.gitlab-ci.yml

.gitlab/ci/pages.gitlab-ci.yml

.gitlab/ci/qa.gitlab-ci.yml

.gitlab/ci/rails.gitlab-ci.yml

.gitlab/ci/review.gitlab-ci.yml

app/assets/javascripts/api.js

app/assets/javascripts/pages/projects/releases/edit/index.js

app/assets/javascripts/releases/detail/components/app.vue

app/assets/javascripts/releases/detail/index.js

app/assets/javascripts/releases/detail/store/actions.js

app/assets/javascripts/releases/detail/store/index.js

...ssets/javascripts/releases/detail/store/mutation_types.js

app/assets/javascripts/releases/detail/store/mutations.js

app/assets/javascripts/releases/detail/store/state.js

app/assets/stylesheets/framework/lists.scss

app/assets/stylesheets/pages/tags.scss

app/controllers/health_controller.rb