Change the sidebar theme as "sidebar_theme"

[Ajotah98]

Change the "theme" property of sidebar as "sidebar_theme" (#540) and accept it as parameter and not a boolean.

I don't really know "where" to place the documentation, as the folder docs doesn't include the documentation.sql of the components nor the Markdown files with docs.

[lovasoa]

Yes, I'm sorry, the location of the documentation is not obvious. It's here:

https://github.com/lovasoa/SQLpage/blob/e5c54727c242d5daa7bd8c5cebc72205e7884a0c/examples/official-site/sqlpage/migrations/01_documentation.sql#L870

[lovasoa]

Thank you @Ajotah98 !