Add `increment_counter` to Usage Ping API [RUN ALL RSPEC]

See merge request gitlab-org/gitlab!47309

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/233994

**Problem**

There is no API endpoint that can process ordinary Redis counter
events.

**Solution**

Add `increment_counter` endpoint to accept ordinary Redis events.

Resolve "Catch wiki timeouts when rendering pages"

See merge request gitlab-org/gitlab!46627

This adds tests for all the actions that we expect to catch gitaly
timeouts in, and special handling of failures to load the side-bar.

Update feature categories for 2020-11-19

See merge request gitlab-org/gitlab!48133

Add alert for exceeding new user signups cap

See merge request gitlab-org/gitlab!46673

Add banner for notyfing admins about reached
cap for new user signups.

Update index secure for API Fuzzing telemetry

See merge request gitlab-org/gitlab!47692

Replace prepend-left-20 in project/web_hooks

See merge request gitlab-org/gitlab!47956

Remove brackets of "project name" message

See merge request gitlab-org/gitlab!47642

Remove brackets slack slash and mattemost commands suggestions to allow
easier translations.

Two changes here:

1. `instance_statistics` -> `devops_reports`
2. `alert_management` -> `incident_management`

Update Gitaly version

See merge request gitlab-org/gitlab!48127

Remove `projects_prometheus_active` usage ping from EE

See merge request gitlab-org/gitlab!47792

Iterate on copy in the “Novice or Experienced” page

See merge request gitlab-org/gitlab!48086

Add connection redaction and connection extension methods

See merge request gitlab-org/gitlab!47967

Add in docs how to configure pull mirroring via API

See merge request gitlab-org/gitlab!47492

Apply gl-button class to buttons

See merge request gitlab-org/gitlab!47518

Add devops adoption segment modal component

See merge request gitlab-org/gitlab!47623

This MR adds the devops adoption segment modal.
The modal will be used for add and editing segments.

Move members JS from `vue_shared` to main JS directory [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!46995

Replace fa-exclamation-triangle in users select

See merge request gitlab-org/gitlab!48116

Scroll exactly to the top of a discussion on the MR Overview tab

See merge request gitlab-org/gitlab!47970

Merge branch '262109-fe-add-severity-counters-to-group-and-instance-vulnerability-reports-refactor' into 'master'

Refactor severity vulnerabilities count to support group- and instance- reports

See merge request gitlab-org/gitlab!47743

Replace Runner Page Title with Runner’s Hash

See merge request gitlab-org/gitlab!44854

Removed DAST On-demand landing page

See merge request gitlab-org/gitlab!47867

Update Gitaly version

See merge request gitlab-org/gitlab!48118

Fixed editing labels on the swimlanes sidebar

See merge request gitlab-org/gitlab!47946

Remove http_integrations_list feature flag

See merge request gitlab-org/gitlab!48030

Remove http_integrations_list flag
and remove old code tied to this
feature flag that is no longer used