Remove obsolete code in importers and remove new_import_ui feature flag"

See merge request gitlab-org/gitlab!35748

Paginate the notes incremental fetch endpoint

See merge request gitlab-org/gitlab!34628

Returning an unlimited number of elements from any endpoint is a bad
idea. For the notes endpoint specifically, we return all notes since
a given `X-Last-Fetched-At` value. The backend specifies the new value
to use for that item in the response, so if we return a limited set of
notes and use an appropriate value, we get a rudimentary form of keyset
pagination for free.

The way the notes endpoint is used today, this is mostly a theoretical
worry, and in practice, basically every response will fit within a
single page anyway. However, we can use the `notes` endpoint *instead
of* the `discussions` endpoint to fill a merge request discussion from
the beginning of time. When we do this, large discussions are loaded in
batches automatically, using pre-existing frontend code. So this change
is best seen as preparatory work for removing `discussions` altogether.

This commit also fixes a pre-existing problem with the endpoint, which
is the fact that `updated_at` is stored with *microsecond* precision in
the database. Converting the X-Last-Fetched-At value from integer to
float allows us to avoid a range of boundary conditions that result.

Merge tslint with eslint

See merge request gitlab-org/gitlab!36400

Remove GitlabIssueTrackerService records

See merge request gitlab-org/gitlab!35221

The GitlabIssueTrackerService class is not used anymore
and will be removed too.

Exposing GitLab managed apps logs - Documentation Update

See merge request gitlab-org/gitlab!37096

Product Analytics collector

See merge request gitlab-org/gitlab!36443

Rack application within Rails to record product analytics events.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Why:

* https://gitlab.com/gitlab-org/gitlab/-/issues/36059

This change addresses the need by:

* Remove references to TSLint.
* Update TypeScript references to point to the ESLint analyzer.
* Remove tslint-sast job from the SAST.gitlab-ci.yml file.
* Update eslint-sast job in the SAST.gitlab-ci.yml file to be triggered
  by TypeScript files.

Side effects:

* TypeScript vulnerabilities may be auto closed and reopened by the
  ESLint analyzer.

Present only issues visible to user in Vulnerabilitiy Issue Links API

See merge request gitlab-org/gitlab!36987

Verbiage tweaks for SAST config MRs

See merge request gitlab-org/gitlab!36831

Add state events to API

See merge request gitlab-org/gitlab!35210

add a commonly used virtualenv directory as a sample path to exclude

See merge request gitlab-org/gitlab!37124

include gl-coverage-fuzzing-report.json in artifacts

See merge request gitlab-org/gitlab!37110

Add a version number to metrics dashboard cache keys

See merge request gitlab-org/gitlab!37081

Swap Grape over to Gitlab::Json

See merge request gitlab-org/gitlab!36472

Forces Grape to use `Gitlab::Json` for rendering JSON,
rather than going through ActiveSupport or its own wrapper.

Updated docs to reflect current capabilities

See merge request gitlab-org/gitlab!37085

Add securing page to clusters documentation

Closes #222740

See merge request gitlab-org/gitlab!36875

Add documentation for PagerDuty incident integration

Closes #227211

See merge request gitlab-org/gitlab!37069

Speed up project creation for users with many projects

See merge request gitlab-org/gitlab!37070

Add short custom metrics dashboard urls to docs

See merge request gitlab-org/gitlab!37011

Static Site Editor: Allow to configure the number of sublist indent spaces

See merge request gitlab-org/gitlab!36756

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/36756

Update Chrome version to 84 in the QA image

See merge request gitlab-org/gitlab!36976

Tweaked the verbiage for the MRs we are creating from the SAST Config UI

Fix failing dashboard schema validation calls

See merge request gitlab-org/gitlab!37108

Fix issuables list search filter on labels

See merge request gitlab-org/gitlab!36631

Resolve "Update usage ping data to track MRs with added rules"

See merge request gitlab-org/gitlab!36222

* Also includes a factory for ApprovalMergeRequestRuleSource
* Updates usage ping documentation

Merge branch '228616-bulk-edit-of-labels-adding-labels-to-multiple-issues-adds-too-many-labels' into 'master'

Fix bulk editing of labels not working correctly

See merge request gitlab-org/gitlab!36981

Uneditable block spacing and minor listener refactor

See merge request gitlab-org/gitlab!37087