Bump nokogiri to 1.8.4 and sanitize to 4.6.6 for performance

See merge request gitlab-org/gitlab-ce!20795

Enable frozen string in app/serializers/**/*.rb

See merge request gitlab-org/gitlab-ce!20726

Add docs to disable proxy listener

See merge request gitlab-org/gitlab-ce!19734

Revert "Merge branch '2211-add-option-to-change-clone-path-docs' into 'master'"

See merge request gitlab-org/gitlab-ce!20633

In docs, add `No+Milestone` for querying by milestone

See merge request gitlab-org/gitlab-ce!20784

Annotate Gitlab::Git::Repository#fetch_ref

See merge request gitlab-org/gitlab-ce!20742

sanitize 4.6.6 has this optimization that will benefit Markdown rendering: https://github.com/rgrove/sanitize/pull/183

nokogiri 1.4.4 has this memory leak fix: https://github.com/sparklemotion/nokogiri/pull/1771

Add filter for minimal access level in groups and projects API

Closes #48165

See merge request gitlab-org/gitlab-ce!20478

Signed-off-by: NMarko, Peter <peter.marko@siemens.com>

Signed-off-by: NMarko, Peter <peter.marko@siemens.com>

Signed-off-by: NMarko, Peter <peter.marko@siemens.com>

Improving performance of posting a comment by reducing memory + CPU

See merge request gitlab-org/gitlab-ce!20779

Merge branch '6977-follow-up-from-ee-resolve-extract-ee-specific-files-lines-for-some-platform-related-project-views' into 'master'

Use render instead of render_if_exists in app/views/projects/services/prometheus/_show.html.haml

Closes gitlab-ee#6977

See merge request gitlab-org/gitlab-ce!20783

Partially addresses #47424.

Remove instrumentation for Rouge::Plugins::{Redcarpet,CommonMark}

See merge request gitlab-org/gitlab-ce!20791

Enable frozen strings in remaining lib/banzai/filter/*.rb files

See merge request gitlab-org/gitlab-ce!20777

Adds Vuex store to handle the data for tests reports in MR widget

See merge request gitlab-org/gitlab-ce!20709

The removal in 4d376c66 had an unintended
side effect in that it got rid of the `require 'rouge/plugins/redcarpet'`.

Mention how we use gitlab-triage

See merge request gitlab-org/gitlab-ce!20787

Replace 'Sidekiq::Testing.inline!' with 'perform_enqueued_jobs'

Closes #22991

See merge request gitlab-org/gitlab-ce!20768

Enable frozen strings in lib/banzai/filter/*.rb

See merge request gitlab-org/gitlab-ce!20775

Resolve "Commits page tooltips"

Closes #29278

See merge request gitlab-org/gitlab-ce!20674

Display GPG status on repository and blob pages

Closes #36046

See merge request gitlab-org/gitlab-ce!20524

This also fixes a bug with the ImageLazyLoadFilter not doing the right
thing when an existing class attribute is present.

Part of #47424

Signed-off-by: NRémy Coutable <remy@rymai.me>

Pipeline security dashboard: Backport code from EE

See merge request gitlab-org/gitlab-ce!20733

[ci skip]

Enable frozen string in newly added files

See merge request gitlab-org/gitlab-ce!20763

Remove method instrumentation for Banzai filters and reference parsers

See merge request gitlab-org/gitlab-ce!20770

Reducing the memory footprint for the rendering

See merge request gitlab-org/gitlab-ce!20744

Fix rendering issue in admin/pages docs

See merge request gitlab-org/gitlab-ce!20766

Docs: Add a step to install Postgresql related Gems before creating the schema

See merge request gitlab-org/gitlab-ce!20739