* upstream/master: (216 commits)
  Remove invalid changelog entries
  require rails/generators for generators
  Adds variable. Fixes changelog
  Fix haml_lint
  Fixes after review
  Update changelog
  Remove tooltips from project header
  Makes table pagination responsive
  23545 Fix distorted project and group avatars
  Fix spinach tests
  Update links in side nav and header
  Allow to search for user by secondary email address in the admin interface
  Rename :name search parameter to :search_query at /admin/users
  Initialize Sidekiq with the list of queues used by GitLab
  Fix project features default values
  Add a link to the Issue Boards API in main README
  Add validation errors to Merge Request form
  Fix Markdown styling inside reference links
  Fix relative links in Markdown wiki when displayed in "Project" tab
  Adds label description to issue board title
  ...