* master: (67 commits)
  (Part 1) Resolve "Recognise when a user is trying to validate a private SSH key"
  Fix auto_cancel_pending_pipelines check
  Resolve "2FA should not attempt to use U2F in unsupported browsers"
  Resolve "Change the BitBucket import page to indicate that its for BB Cloud only, not for on-prem BB"
  Resolve "Help users find our contributing page"
  Docs broken links
  Refactor issue boards and get the EE changes to CE
  Adds test to cover the fix in #45575
  Log push output on exception
  Update gitlab_chart.md
  Remove top margin for bootstrap popover headers
  Bump sprockets to 3.7.2 to address CVE-2018-3760
  Bring changes from EE
  Bring changes from EE
  Simplify the decode secret step
  Cleanup ruby sampler metrics
  Raw diffs are served from Gitaly
  add inline badges to auto devops feature list
  Add more large tables to cop
  Bring changes from EE
  ...

Merge branch '46396-recognise-when-a-user-is-trying-to-validate-a-private-ssh-key-part-1' into 'master'

(Part 1) Resolve "Recognise when a user is trying to validate a private SSH key"

See merge request gitlab-org/gitlab-ce!19994

Fix auto_cancel_pending_pipelines check

Closes #47834

See merge request gitlab-org/gitlab-ce!19820

Unify filtered_search_token_keys_spec.js

See merge request gitlab-org/gitlab-ce!20094

Resolve "2FA should not attempt to use U2F in unsupported browsers"

Closes #40005 and #27772

See merge request gitlab-org/gitlab-ce!19938

Add test for "Bug: When creating an account with invalid characters the error is "Username already taken" not "Invalid characters used""

See merge request gitlab-org/gitlab-ce!20124

Merge branch '48260-change-the-bitbucket-import-page-to-indicate-that-its-for-bb-cloud-only-not-for-on-prem-bb' into 'master'

Resolve "Change the BitBucket import page to indicate that its for BB Cloud only, not for on-prem BB"

Closes #48260

See merge request gitlab-org/gitlab-ce!20080

Resolve "Change the BitBucket import page to indicate that its for BB Cloud only, not for on-prem BB"

Resolve "Help users find our contributing page"

Closes #47274

See merge request gitlab-org/gitlab-ce!19708

Docs broken links

See merge request gitlab-org/gitlab-ce!20098

Refactor issue boards and get the EE changes to CE

See merge request gitlab-org/gitlab-ce!19839

Log push output on exception

See merge request gitlab-org/gitlab-ce!20085

Minor fixes for the Helm docs

See merge request gitlab-org/gitlab-ce!20078

Resolve "Remove top padding on GPG popovers"

Closes #48296

See merge request gitlab-org/gitlab-ce!20110

Bump sprockets to 3.7.2 to address CVE-2018-3760

See merge request gitlab-org/gitlab-ce!20109

Unify spec/support/matchers/match_ids.rb

See merge request gitlab-org/gitlab-ce!20108

Raw diffs are served from Gitaly

Closes gitaly#222

See merge request gitlab-org/gitlab-ce!20091

Unify spec/features/admin/admin_groups_spec.rb

See merge request gitlab-org/gitlab-ce!20107

Fix boards issue highlight

Closes #48068

See merge request gitlab-org/gitlab-ce!20063

CE-EE parity for lib/gitlab/git/gitlab_projects.rb

See merge request gitlab-org/gitlab-ce!20047

[Rails5] Fix "'-1' is not a valid data_store"

See merge request gitlab-org/gitlab-ce!19917

Update lfs_administration.md with language edits

See merge request gitlab-org/gitlab-ce!19950

Add troubleshooting guide for lfs uploading timeouts

See merge request gitlab-org/gitlab-ce!19949

FindRefName RPC now mandatory

Closes gitaly#221

See merge request gitlab-org/gitlab-ce!20090

Docs: add inline badges to Auto DevOps features list

See merge request gitlab-org/gitlab-ce!20096