Reorganize Classic UI Theming part (#1831)

* Reorganize Classic UI Theming part

* Update docs/classic-ui/theming/settings-ttw.md

Co-authored-by: Peter Mathis <petschki@users.noreply.github.com>

* Update settings-ttw.md

* Fix broken link

* Add guide for choosing one Classic UI theme or another, thanks to @jensens!

* Provide the content for the Diazo theming part (#1870)

* Update tips submodules/plone.api submodules/volto

* Update tip submodules/volto

* Fix broken references (#1868)

* Fix broken references
- `link.svg`
- `_inc/_install-browser-reqs-volto.md`

* Fix linkcheck to bobtemplates

* Update tip submodules/volto

* Fix link

* Update tip submodules/plone.api

* Update tip submodules/volto

* initial structure of Theming with Diazo

* more doc

* initial structure of Theming with Diazo

* more doc

* - Add diazo to toctree
- Add note update getting help for choosing a theming method

* Clean up grammar, one sentence per line, MyST syntax

* Add language

* Move concepts and advice into a new Theme development advice section

* Minor tweaks

* Rename section to reflect its content

* Adjust heading level

* Update diazo.md

explain the purpose of each file created when addin a theme

* Update diazo.md

Link to Diazo docs.

* Update diazo.md

* - Make first mention of Diazo a term, already existing in the Glossary
- Reuse a sentence from Diazo docs that fills a critical gap in the introduction.
- Convert list of files descriptions into a definition list

* Tweak markup

* add tinymce templates docs

* Tidy up

* Add a label and important admonition about Template plugin removal in TinyMCE 7.0

* Remove important admonition about Template plugin

---------

Co-authored-by: Steve Piercy <web@stevepiercy.com>

* Fix broken link

---------

Co-authored-by: Peter Mathis <petschki@users.noreply.github.com>
Co-authored-by: Mikel Larreategi <mlarreategi@codesyntax.com>

Author: 3 people

docs/backend/schemas.md

@@ -101,7 +101,6 @@ This schema can be used in {doc}`/classic-ui/forms` and Dexterity {doc}`/backend
 
 ```{note}
 In Dexterity {doc}`/backend/content-types/index`, the base class for a schema is `plone.supermodel.model.Schema`.
-This provides functionalities to export and import schemas via XML and the {doc}` Through-the-web (TTW) </classic-ui/theming/through-the-web>` editor.
 ```
 
 

docs/classic-ui/theming/barceloneta.md

@@ -7,7 +7,7 @@ myst:
     "keywords": "Plone, Classic UI, theming, color modes, Bootstrap, Twitter"
 ---
 
-(color-modes-label)=
+(classic-ui-theming-color-modes-label)=
 
 # Color modes
 
@@ -24,8 +24,8 @@ This chapter is a guide for how to implement color modes in Plone 6.
 ## Preferred color modes
 
 You will need to add some JavaScript functionality to set the Bootstrap theme to the user's preferred color scheme.
-Add the JavaScript file to the `browser/static` folder of your Plone 6 project.
-Register it in the `browser/profiles/default/registry` of your Plone 6 project.
+Add the JavaScript file to the {file}`browser/static` folder of your Plone 6 project.
+Register it in the {file}`browser/profiles/default/registry` of your Plone 6 project.
 See {ref}`classic-ui-static-resources-registering-label` for more information.
 
 ```js
@@ -75,8 +75,8 @@ If you want to add a theme toggler to your site, you can use the following examp
 You will need to add some JavaScript functionality to the toggler.
 The following code snippet is based on the [Bootstrap 5.3 documentation](https://getbootstrap.com/docs/5.3/customize/color-modes/#javascript).
 
-Add the JavaScript file to the `browser/static` folder of your Plone 6 project.
-Register it in the `browser/profiles/default/registry` of your Plone 6 project.
+Add the JavaScript file to the {file}`browser/static` folder of your Plone 6 project.
+Register it in the {file}`browser/profiles/default/registry` of your Plone 6 project.
 See {ref}`classic-ui-static-resources-registering-label` for more information.
 
 ```js