Some Backend Admin fixes and updates (#5272)

* Some Backend Admin fixes and updates

- Updated datatables
- Added a `X-Robots-Tags` header to prevent indexing
- Modified some layout settings
- Added Websocket check to diagnostics
- Added Security Header checks to diagnostics
- Added Error page response checks to diagnostics
- Modifed support string layout a bit

Signed-off-by: BlackDex <black.dex@gmail.com>

* Some small fixes

Signed-off-by: BlackDex <black.dex@gmail.com>

---------

Signed-off-by: BlackDex <black.dex@gmail.com>

src/static/templates/admin/users.hbs

@@ -19,7 +19,7 @@
                     <tr>
                         <td>
                             <svg width="48" height="48" class="float-start me-2 rounded" data-jdenticon-value="{{email}}">
-                            <div class="float-start">
+                            <div>
                                 <strong>{{name}}</strong>
                                 <span class="d-block">{{email}}</span>
                                 <span class="d-block">