Rename methods that conflict in Rails 5.2

Closes #55583

See merge request gitlab-org/gitlab-ce!28281

Use real mermaid for mermaid result

See merge request gitlab-org/gitlab-ce!28300

First iteration of documentation for writing end-to-end tests

See merge request gitlab-org/gitlab-ce!27603

framework that intends to make easier for every engineer to
contribute with the end-to-end tests creation, edition, and
improvements.

Improve installation from source

Closes #47483, #61549, and #50937

See merge request gitlab-org/gitlab-ce!28201

* Add a solution for JavaScript heap out of memory error when compiling
assets
* Add note about postgres database config
* Start gitaly before gitlab:setup as it won't work otherwise
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Merge branch '9228-geo-how-to-reconcile-differences-with-geo-checksum-mismatches-docs' into 'master'

Document how to reconcile differences with Geo checksum mismatches

Closes gitlab-ee#9228

See merge request gitlab-org/gitlab-ce!28183

Update ruby_parser for ruby 2.6

See merge request gitlab-org/gitlab-ce!28295

Resolve "Remove ignore_column ci_id"

Closes #61302

See merge request gitlab-org/gitlab-ce!28234

Ensure that dependencies are installed before running frontend tests

See merge request gitlab-org/gitlab-ce!28236

CE backport: Remove non-semantic use of `.row` in member listing controls

See merge request gitlab-org/gitlab-ce!28204

Adds changelog entry for Matomo string website ID support

See merge request gitlab-org/gitlab-ce!28244

Fix E2E test - wait for branches to not be present

See merge request gitlab-org/gitlab-ce!27805

Eager load the GraphQL schema in specs

Closes gitlab-ee#11497

See merge request gitlab-org/gitlab-ce!28246

Expain usage of `artifacts_server` in `gitlab.yml`

See merge request gitlab-org/gitlab-ce!28230

Update doc/development/fe_guide/graphql.md

See merge request gitlab-org/gitlab-ce!28272

Adds suffix to enum methods and changes `in_groups` to
`of_groups`

Docs: Fix wording error in salesforce section

See merge request gitlab-org/gitlab-ce!28190

fix typos in new_ci_build_permissions_model.md

See merge request gitlab-org/gitlab-ce!28087

Update webhooks examples of Issue and MR in documentation

Closes #61187

See merge request gitlab-org/gitlab-ce!27897

Not my initial idea but when I write the issue I see this field is wrong

Update K8S apps to checkmark

See merge request gitlab-org/gitlab-ce!28259

Add EE fixtures to SeedFu fixture paths

See merge request gitlab-org/gitlab-ce!28241

Update get_process_mem to 0.2.3

See merge request gitlab-org/gitlab-ce!28248

Provide alternatives to using setTimeout in frontend tests (docs)

Closes #49612

See merge request gitlab-org/gitlab-ce!28207

Add warning about updating Omnibus is secrets are updated

See merge request gitlab-org/gitlab-ce!28247

Fixes next badge being always visible

Closes #61550

See merge request gitlab-org/gitlab-ce!28249

This squelches a BigDecimal warning in Ruby 2.6:

warning: BigDecimal.new is deprecated; use BigDecimal() method instead.

https://github.com/schneems/get_process_mem/blob/master/CHANGELOG.md

[ci skip]

Avoid counting on Rails eager loading the GraphQL types, but preload
them before the specs.

This would avoid loading the schema in 2 separate threads
concurrently (1 inside the specs, 1 inside the test-server that will
receive requests). Loading the schema in parallel like that could
cause duplicate definition errors.

Fix unrelated errors when teardowning quanrantined specs

See merge request gitlab-org/gitlab-ce!28240

Update CI minutes docs to reflect this is available to all plans

See merge request gitlab-org/gitlab-ce!28237