Plone.app.theming

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New features:


- Deactivate copy button and modal in theming control panel. [MrTango] (205)
- Load barceloneta css in theming control panel to have it styled. [MrTango] (205)
- Remove all thememapper functionality from theming control panel,
including Inspect/Modify theme and the Preview. [maurits] (205)
- Use pat-code-editor for custom-css field. [MrTango] (205)

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Bug fixes:


- Add missing i18n:translate tags
[erral] (204)

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Bug fixes:


- Use HTML5 meta charset.
[thet] (203)

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Bug fixes:


- Fix unclosed file when reading manifest.cfg
[petschki] (199)
- Remove cyclic dependency with Products.CMFPlone
[sneridagh] (201)

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Breaking changes:


- Add bootstrap icon from resolver from Plone 6.
[petschki, agitator] (194)


Bug fixes:


- Avoid Server Side Request Forgery via lxml parser.
Taken over from `PloneHotfix20210518 <https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser>`_.
[maurits] (3274)

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Bug fixes:


- For increased security, fail when trying file protocol access in diazo rules.
Also do not resolve entities, and remove processing instructions.
[maurits] (3209)