Shopping cart: Add authenticated shopping cart and reconciliation between authenticated non-authenticated carts.

Authentication, authorization & DB: Use MySQL foreign data wrapper for authentication, authorization & user infos.

Display DDI : improve tables, not to display one level list, improve keywords and topic class diplaying

Display Markdown : improve table, add type=blocquote to bind title with the content, add type=listwithlink

This reverts commit 26d69fac.

This reverts commit 1125380d.

Affichage DDI: Markdown parser: improve conditions, in order not to display wrong content - with a bug 500 to fix

Affichage DDI: Implement markdown_parser.ts functions in MarkdownDisplayDDI Component, improve displaying of tables

Affichage DDI: Markdown parsing: Create file markdown_parset.ts, move some functions from accessors, implement new function readCodebookFromMarkdownAst