erp5_web_renderjs_ui: Calculate link to render developer actions and support raw urls in ERP5JS UI
Gabriel Monnerat authored
Calculate link to allow Nexedi developers access the ERP5 fields, forms and form actions from it.

* erp5 form gadget handle links to access from and form action
* label field gadget handle links to access field configuration, title
and descriptions translations
* page action handle all links to access workflows and portal type document
* add generic function to merge action with raw actions by group

* Add sample of action that allow uses access slideshow from ERP5JS
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