Docs: Settings updates at runtime (#34169) (#34892)

* Docs: Settings updates on runtime docs skeleton

* Docs: Settings HTTP API

* Docs: Minor changes on settings updates at runtime docs

* Docs: Settings updates at runtime description

* Docs: Minor fix

* Docs: Move PUT /api/admin/settings docs into Admin API page

* Docs: Added longer explanation into 'Settings updates at runtime' page

* Apply suggestions from code review

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
Co-authored-by: Leonard Gram <leo@xlson.com>

* Docs: Include order of precedence description at settings updates page

* Update docs/sources/http_api/admin.md

* Docs: Add link to main configuration page from Settings updates at runtime

* Apply suggestions from code review

Co-authored-by: Mitch Seaman <mjseaman@users.noreply.github.com>

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
Co-authored-by: Leonard Gram <leo@xlson.com>
Co-authored-by: Mitch Seaman <mjseaman@users.noreply.github.com>
(cherry picked from commit 886f6fc55b)

docs/sources/http_api/admin.md

@@ -11,7 +11,7 @@ The Admin HTTP API does not currently work with an API Token. API Tokens are cur
 the permission of server admin, only users can be given that permission. So in order to use these API calls you will have to use Basic Auth and the Grafana user
 must have the Grafana Admin permission. (The default admin user is called `admin` and has permission to use this API.)
 
-## Settings
+## Fetch settings
 
 `GET /api/admin/settings`
 
@@ -169,6 +169,57 @@ Content-Type: application/json
 **Example Response**:
 
 ```http
+HTTP/1.1 200
+Content-Type: application/json
+
+```
+
+## Delete global User
+
+`DELETE /api/admin/users/:id`
+
+Only works with Basic Authentication (username and password). See [introduction](http://docs.grafana.org/http_api/admin/#admin-api) for an explanation.
+
+**Example Request**:
+
+```http
+DELETE /api/admin/users/2 HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+```
+
+**Example Response**:
+
+```http
+HTTP/1.1 200
+Content-Type: application/json
+
+```
+
+## Pause all alerts
+
+`POST /api/admin/pause-all-alerts`
+
+Only works with Basic Authentication (username and password). See [introduction](http://docs.grafana.org/http_api/admin/#admin-api) for an explanation.
+
+**Example Request**:
+
+```http
+POST /api/admin/pause-all-alerts HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+
+```
+
+JSON Body schema:
+
+- **paused** – If true then all alerts are to be paused, false unpauses all alerts.
+
+**Example Response**:
+
+```http
+HTTP/1.1 200
+Content-Type: application/json
 
 ```