website/docs: enhance customization docs (#15081)

* drafty

* rearrange everything

* fix links

* fixed link

* more links to fix

* tweaks

* not sure

* Optimised images with calibre/image-actions

* Update website/docs/add-secure-apps/providers/rac/index.md

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/_global/global.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/sys-mgmt/brands.md

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/_global/global.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/add-secure-apps/providers/rac/index.md

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/_global/global.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/user-admin/customization.mdx

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/user-admin/customization.mdx

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/user-admin/customization.mdx

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/user-admin/customization.mdx

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/user-admin/customization.mdx

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/netlify.toml

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/flow/customization.mdx

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* tweak

* separated admin and user again

* so many busted things, now unbusted

* redirect yesterday's redirects

* dewi edits

* tweak to bump build

* revert package.json change

* links, tweaks

* Optimised images with calibre/image-actions

* Update website/docs/customize/interfaces/admin/customization_admin_ui.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/admin/customization_admin_ui.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/flow/customization_flow.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/flow/customization_flow.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/user/customization_user_ui.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* Update website/docs/customize/interfaces/admin/customization_admin_ui.mdx

Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>

* simplify sidebar

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix redirect indent

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* rename files

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* flows -> flow interface

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Tana M Berry <tanamarieberry@yahoo.com>
Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: Tana M Berry <tana@goauthentik.io>
Co-authored-by: authentik-automation[bot] <135050075+authentik-automation[bot]@users.noreply.github.com>
Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Co-authored-by: Dominic R <dominic@sdko.org>
Co-authored-by: Jens Langhammer <jens@goauthentik.io>

website/docs/customize/interfaces/_global/global.mdx

@@ -1,3 +1,11 @@
-### Global customization
+## Global customization
 
-See [Brand Settings](../../../sys-mgmt/brands.md#branding-settings)
+To customize the following brand settings, log in to the Admin interface and navigate to **System > Brands > Brand settings**.
+
+- Title
+- Logo
+- Favicon
+- Default flow background image
+- Custom CSS
+
+For more details, see the [Brand settings](../../../sys-mgmt/brands.md#branding-settings) documentation.