Reindexing: Add statistics tracking

See merge request gitlab-org/gitlab!43156

This keeps track of index rebuilds and in particular about the change in
terms of ondisk size for the index. We also track execution time through
start/end timestamps.

For now, this is only used manually (e.g. to check the impact/success of
reindexing efforts).

Later, it may get used to more cleverly select indexes for rebuilding.
For example, we might prefer indexes that have had high levels of bloat
before or indexes that haven't been rebuilt recently. This can be
derived from the statistics.

Merge branch '257866-update-feature-flags-project_import_ndjson-and-project_export_as_ndjson' into 'master'

Resolve "Update Feature Flags - project_import_ndjson and project_export_as_ndjson"

See merge request gitlab-org/gitlab!43585

Update image to use Chrome 85

See merge request gitlab-org/gitlab!41159

Move approval MR filter and quick actions to CE

See merge request gitlab-org/gitlab!43326

Added group for prog-delivery FF yml files

See merge request gitlab-org/gitlab!43674

Fix flacky ee/spec/models/issue_spec.rb

See merge request gitlab-org/gitlab!43330

Merge branch '231117-apply-gl-button-to-ee/app/views/projects/settings/ci_cd-directory' into 'master'

Apply GitLab UI button styles to buttons in ee/app/views/projects/settings/ci_cd directory

See merge request gitlab-org/gitlab!43335

Fix alignment of action buttons in pipelines

See merge request gitlab-org/gitlab!42971

Update Danger bot reviews from Telemetry to Product Analytics

Closes #254237

See merge request gitlab-org/gitlab!42850

  - Add transition labels for renaming
    to product analytics
  - product analytics(telemetry) labels for review
  - Update Danger file

Propagate integrations using batching and queues

Closes #249564

See merge request gitlab-org/gitlab!42128

Move model overrides into own spec location

Closes #258543

See merge request gitlab-org/gitlab!43666

Update ownership of feature flag settings_operations_prometheus_service

Closes gitlab-org/monitor/health#35

See merge request gitlab-org/gitlab!43688

Fix Ruby 2.7 deprecation warnings for Members::DestroyService

See merge request gitlab-org/gitlab!43524

Cleanup track_iteration_change_events feature flag

See merge request gitlab-org/gitlab!43397

Update `release_evidence` feature flag yml

See merge request gitlab-org/gitlab!43569

Fix group wiki empty state spec

Closes #258567

See merge request gitlab-org/gitlab!43689

Fix bug in rails cheat sheet for MR

See merge request gitlab-org/gitlab!43695

These need `stub_group_wikis` to show group wikis at all, let alone the
empty state.

Documentation: Gitpod Integration: Added closing triple backticks to close code block `Feature.disable(:gitpod)` at EOF

See merge request gitlab-org/gitlab!43552

Documentation: Gitpod Integration: Added closing triple backticks to close code block `Feature.disable(:gitpod)` at EOF

Resolve "DAST Profiles button should be changed to `default` styling"

Closes #247285

See merge request gitlab-org/gitlab!43588

Update cloud native build logs blueprint progress

See merge request gitlab-org/gitlab!43685

Add badging to clarify tier

See merge request gitlab-org/gitlab!43626

track_iteration_change_events is a developement FF that was enabled
by default and can be cleaned up.

Add links to feature flag YML

See merge request gitlab-org/gitlab!43509

Remove security_on_demand_scans_scanner_profiles feature flag

See merge request gitlab-org/gitlab!41892

Remove unused css code in pipelines.scss -> .ci-table

See merge request gitlab-org/gitlab!43250

Fix Ruby 2.7 deprecation warnings in  icons_helper.rb

See merge request gitlab-org/gitlab!43600

Fix Ruby 2.7 deprecation warnings in several counter specs

See merge request gitlab-org/gitlab!43517

Fix(Productivity Analytics): store initialization

Closes #255887

See merge request gitlab-org/gitlab!43532

Ensure export is an initialized store (singleton),
so multiple files can import the same store.

Issue introduced here:
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/41284/diffs#e78dbd127d4c8bfeb28a926d59a68fc64e92d90f_26_25

[Re-Revert] Part 1: Add reviewers to side widget (Setup HAML + JS)

See merge request gitlab-org/gitlab!42642