use rfc 3676 mail signature delimiters ("-- ") instead of the previous
"---" one.

closes #43617
Signed-off-by: Enrico Scholz <enrico.scholz@ensc.de>

This reverts merge request !18399

Fix link in Security Developer Workflow.md

See merge request gitlab-org/gitlab-ce!18445

Email notification on issue due date

Closes #27500

See merge request gitlab-org/gitlab-ce!17985

Resolve "Make a Rubocop that forbids returning from a block"

Closes #42889

See merge request gitlab-org/gitlab-ce!18000

Resolve "Concurrent requests to api/v4/jobs/request cause DB locks on ci_builds_metadata table"

Closes #45456

See merge request gitlab-org/gitlab-ce!18428

Resolve "Using goldiloader results in Ci::RegisterJobService#execute spending a lot of time eager loading a lot of associations"

See merge request gitlab-org/gitlab-ce!18439

Resolve "Time estimate system notes can be confusing"

Closes #40402

See merge request gitlab-org/gitlab-ce!18326

Docs assign labels to subgroups

See merge request gitlab-org/gitlab-ce!18438

Fix Markdown typo in Web IDE docs

See merge request gitlab-org/gitlab-ce!18443

Fix `Trace::HttpIO` can not render multi-byte chars

Closes #44981

See merge request gitlab-org/gitlab-ce!18417

Improve jobs queuing time metric (fixed version)

Closes #45205

See merge request gitlab-org/gitlab-ce!18283

Return nil on empty path

Closes gitaly#1115

See merge request gitlab-org/gitlab-ce!18430

[Rails5] Remove `as` keyword from `Gitlab:Ci:Trace:Stream.delegate :valid?`

See merge request gitlab-org/gitlab-ce!18270

Fix size and position for fork icon

Closes #42582

See merge request gitlab-org/gitlab-ce!18399

As seen in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/5399

Remove ahead/behind graphs on project branches on mobile

Closes #42543

See merge request gitlab-org/gitlab-ce!18415

Docs: update Web IDE > CE (10.7)

See merge request gitlab-org/gitlab-ce!18433

Docs: add product badges to docs

Closes #42631

See merge request gitlab-org/gitlab-ce!18408

Move Gitaly RefExists check to OPT_OUT

Closes gitaly#401

See merge request gitlab-org/gitlab-ce!18333

add initial dev task template for working on a security issue

Closes gitlab-org/release/docs#9

See merge request gitlab-org/gitlab-ce!18133

Update to Git 2.16.3 in doc/install/installation.md

See merge request gitlab-org/gitlab-ce!18434

Add QA tests for protected branches

See merge request gitlab-org/gitlab-ce!18301

Ignore `locale/gitlab.pot` in ee_compat_check

See merge request gitlab-org/gitlab-ce!18424

Remove ambiguity when forking a project to a user's namespace

See merge request gitlab-org/gitlab-ce!18426

Resolve "Improve wording / copy for running a pipeline"

Closes #21677

See merge request gitlab-org/gitlab-ce!18396

Add .org? method to Gitlab helper

See merge request gitlab-org/gitlab-ce!18429

Resolve "Collapsed diff spacing wrong when failed to load"

Closes #45271 and #45317

See merge request gitlab-org/gitlab-ce!18351