Revert "Merge branch '33601-use-ci-default-branch-take-2' into 'master'"

See merge request gitlab-org/gitlab!20049

Remove Unused Helpers from `tab_helpers.rb`

See merge request gitlab-org/gitlab!19832

Defined, but no longer used

Fix CSS loading errors in e-mail notifications

Closes #36201

See merge request gitlab-org/gitlab!20047

Icident management docs

See merge request gitlab-org/gitlab!18805

- Added link from main page
- Added incident management contents

Remove local qualifier from geo sync indicators

See merge request gitlab-org/gitlab!20034

Added note that drag 'n' drop reordering of an epic's issues and child epics was added in %12.5

See merge request gitlab-org/gitlab!20005

Resolve "Possible rails validation problem with updating groups"

See merge request gitlab-org/gitlab!20028

Add id, classification to the software license policy json entity

See merge request gitlab-org/gitlab!19261

Resolve "Add loading indicator when connecting to error tracking server"

See merge request gitlab-org/gitlab!19539

Rather than passing a bunch of store data to error_tracking via
the parent component, use Vuex methods in the component directly
This means changes to the error tracking form won't also require
props changes and changes to the parent component

Remove IIFEs from notes

Closes #34611

See merge request gitlab-org/gitlab!20025

Use strings for request status label

See merge request gitlab-org/gitlab!19967

Add usage ping metric to count alert services

See merge request gitlab-org/gitlab!19765

Removed unused image/screenshot

See merge request gitlab-org/gitlab!20033

Usage Ping for Grafana Integration Part 1

See merge request gitlab-org/gitlab!19398

Add a count of grafana integrated projects
within the usage ping

docs - Reference to scoped label must be quoted

See merge request gitlab-org/gitlab!20053

DAST-Default-Branch-Deploy.gitlab-ci.yml should not clobber Deploy template

See merge request gitlab-org/gitlab!19859

Fix typo in Source files and rendered web locations

See merge request gitlab-org/gitlab!19955

Update documentation for new "Release:" filter

See merge request gitlab-org/gitlab!19951

Add vue package app to groups

See merge request gitlab-org/gitlab!19957

- move old code to legacy
- fix feature tests

This commit adds a number of search filters in the documentation
that have been added since the documentation was first written.

Proofread doc/user/group/index.md

See merge request gitlab-org/gitlab!20043

Update installation.md remove "`" at "Install GitLab-Elasticsearch-indexer"

See merge request gitlab-org/gitlab!20057

position .ci-action-icon-wrapper svg 0.5px higher

See merge request gitlab-org/gitlab!19820

Remove additional_panel_types and use_prometheus_endpoint feature flags

See merge request gitlab-org/gitlab!17151

This removes the `additional_panel_types` feature flag
allowing to utilize al currently supported chart types
for all users

Optimize MergeRequest#mergeable_discussions_state? method

See merge request gitlab-org/gitlab!19988

We don't need to build discussions to calculate this flag
It's sufficient to fetch the notes which are resolvable but
unresolved yet

Remove horizontal lines from docs

See merge request gitlab-org/gitlab!20038