Merge branch 'master' into full-width-tables

app/views/admin/users/show.html.haml

app/views/layouts/notify.html.haml

app/views/projects/buttons/_notifications.html.haml

app/views/projects/diffs/_diffs.html.haml

app/views/projects/diffs/_file.html.haml

app/views/projects/merge_requests/widget/_heading.html.haml

app/views/shared/_clone_panel.html.haml

app/views/users/calendar.html.haml

app/views/users/show.html.haml

db/fixtures/development/05_users.rb

db/fixtures/development/07_milestones.rb

db/fixtures/development/09_issues.rb

db/fixtures/development/12_snippets.rb

...te/20151008143519_add_admin_notification_email_setting.rb

db/schema.rb

doc/update/8.0-to-8.1.md

doc/update/patch_versions.md

features/steps/abuse_reports.rb

lib/gitlab/markdown/reference_filter.rb

lib/tasks/gitlab/check.rake