In Ruby 2.4, Hash#compact exists and returns a Hash, while in
Ruby 2.3,
Hash#compact is implemented by Rails and returns a new
`ActionController::Parameters` instance in this case.

Also, `ActionController::Parameters#compact` is deprecated in
Rails 5.1 so we're using `reject { |_, value| value.nil? }` instead.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Add code review guidelines related to Build [CI skip].

See merge request !13223

Fix "API specs and linting failing on master"

Closes #35825

See merge request !13227

Make time span dropdown style on cycle analytics page consistent

See merge request !13183

Always fetch branches before finding the merge base, otherwise we could find an outdated merge base

See merge request !13226

Fix bug in blob test

See merge request !13224

[CE] Added Legacy Storage format

See merge request !13149

Make sure we didn't commit conflicts

Closes #35627

See merge request !13141

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

Fixes dropdown margin in sidebar

Closes #35690

See merge request !13205

Add option to use Gitaly CommitLanguages RPC

See merge request !13084

Remove `services: true` from spec/services/ci/pipeline_trigger_service_spec.rb

See merge request !13219

Fix deletion of deploy keys linked to other projects

Closes #35630

See merge request !13162

Remove unused Gitlab::Diff code

See merge request !13195

Invalid variable

See merge request !13214

Fix username typo (jonh to John)

See merge request !13210

Uses jQuery to scroll since setting document.body.scrollTop does not work in firefox

Closes #34492

See merge request !13203

Extend API: Group Secret Variable

Closes #34519

See merge request !12936

Docs add blog articles

Closes #34633

See merge request !13209

Inline script cleanup globals and easy

See merge request !12969

Merge branch 'fix/sm/forbid-to-use-add_column_with_default-on-ci_pipelines-by-rubocop' into 'master'

Forbid to use add_column_with_default on ci_pipelines by rubocop

See merge request !13215

Allow logged in users to read user list under public restriction

Closes #35697

See merge request !13201

Fix LDAP documentation and example config

Closes #35770

See merge request !13196