Port of 27610-issue-number-alignment to EE

Closes gitlab-ce#27610

See merge request !1198

Refactored diff notes Vue app

See merge request !1199

CE Upstream - Wednesday

See merge request !1191

Update Prometheus documentation

See merge request !1200

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Reported in https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1905

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It now relies on its Vue bundle rather than the window. Fixes some reactivity issues that was happening in EE

Port changes from CE !9010 to EE

See merge request !1196

Make approval system notes lowercase

See merge request !1125

Fixes event listener context in mini-pipeline graph

See merge request !1194

This is intead of re-initializing the mini-pipeline graph after the vue app is mounted

Port of 23104-remove-public-param-for-projects to EE

See merge request !1192

Port of 27822-default-bulk-assign-labels to EE

See merge request !1187

Fix broken master specs

See merge request !1190

Fixed diff notes not having its own version of Vue

API: remove `public` param for projects

The create and edit actions for projects had these parameters:

- `public` (optional) - if true same as setting `visibility_level = 20`
- `visibility_level` (optional)

Remove the `public` parameter to avoid contradiction.