Encode Content-Disposition filenames

Closes #47673

See merge request gitlab-org/gitlab-ce!24919

Remove Redcarpet markdown engine

Closes #51374

See merge request gitlab-org/gitlab-ce!24819

[EE] Remove Redcarpet markdown engine

See merge request gitlab-org/gitlab-ee!9391

Resolve "Alert notification emails are not sent"

See merge request gitlab-org/gitlab-ee!9393

Epics relantioship API

Closes #7326

See merge request gitlab-org/gitlab-ee!9188

Merge branch '9495-geo-make-sure-project-does-not-meet-selective-sync-constraint-before-deleting-it' into 'master'

Geo - Make sure project does not meet selective sync rule before deleting it

Closes #9495

See merge request gitlab-org/gitlab-ee!9345

Don't create new pipeline for merge requests with no commits

See merge request gitlab-org/gitlab-ce!24503

Fix comparing equality between `ActionController::Parameters` and a `Hash`....

Closes #57221

See merge request gitlab-org/gitlab-ce!24896

Make it possible to edit Geo primary through API

Closes #9454

See merge request gitlab-org/gitlab-ee!9328

This payload needs to be serializable and we are checking its content
in the NotifyService anyway.

Make `ActionContorller::Parameters` serializable for sidekiq jobs

See merge request gitlab-org/gitlab-ce!24864

FE grammar util

See merge request gitlab-org/gitlab-ce!24893

Add 'in' filter that modifies scope of 'search' filter  to issues and merge requests API

See merge request gitlab-org/gitlab-ce!24350

Remove getChildInstances in project_header_spec and project_search_spec

See merge request gitlab-org/gitlab-ee!9433

Extract ReplyPlaceholder from NoteableDiscussion component

Closes #56370

See merge request gitlab-org/gitlab-ce!24904

Extract ReplyPlaceholder from NoteableDiscussion component (EE-port)

See merge request gitlab-org/gitlab-ee!9321

Add deployment data to metrics graphs

See merge request gitlab-org/gitlab-ce!24650

Updated document-register-element and registering emojis in the new way

See merge request gitlab-org/gitlab-ce!24899

EE-Port of Updated document-register-element and registering emojis in the new way

See merge request gitlab-org/gitlab-ee!9419