Merge branch 'master' into 'dz-nested-groups-improvements-3'

.eslintrc

.gitlab-ci.yml

Gemfile

Gemfile.lock

app/assets/javascripts/application.js

...ets/javascripts/commit/pipelines/pipelines_service.js.es6

app/assets/javascripts/gl_dropdown.js

app/assets/stylesheets/pages/pipelines.scss

app/controllers/projects/wikis_controller.rb

app/models/event.rb

app/models/wiki_page.rb

app/services/wiki_pages/destroy_service.rb

app/views/users/calendar.html.haml

app/views/users/calendar_activities.html.haml

app/views/users/show.html.haml

changelogs/unreleased/14492-change-fork-endpoint.yml

...d/19302-wiki-page-delete-does-not-trigger-the-webhook.yml

.../unreleased/22645-add-discussion-contribs-to-calendar.yml

changelogs/unreleased/23061-consolidate-project-lists.yml

.../unreleased/26286-most-recent-activity-profile-header.yml