Add warning about LE wildcard certificate for pages

See merge request gitlab-org/gitlab-ce!32643

Apply suggestion to doc/user/project/pages/custom_domains_ssl_tls_certification/lets_encrypt_integration.md

Create self-monitoring project in background migration

See merge request gitlab-org/gitlab-ce!32819

- A regular migration caused problems such as
https://gitlab.com/charts/gitlab/issues/1565.

Fix encoding error in MR diffs

Closes #61841

See merge request gitlab-org/gitlab-ce!32862

Fix code docs for RuboCop's helper methods

See merge request gitlab-org/gitlab-ce!32937

`(const nil :Foo)` vs `(const nil? :Foo)`

Fix member expiration not always working

Closes #67286

See merge request gitlab-org/gitlab-ce!32951

Setup counter for Productivity Analytics

See merge request gitlab-org/gitlab-ce!32915

This change sets up a usage counter for productivity analytics feature.

Removed padding from project filter field

See merge request gitlab-org/gitlab-ce!32706

Resolves a regression caused by https://bit.ly/2k1GozA

Fix merge_request_spec test

See merge request gitlab-org/gitlab-ce!32867

Merge branch '50847-automatically-created-mr-uses-wrong-source-branch-when-branching-from-tag' into 'master'

Resolve "Automatically created MR uses wrong source branch (when branching from Tag)"

Closes #50847

See merge request gitlab-org/gitlab-ce!32392