[FIX][document_url] Remove error when clicking on add URL
BTW, completely refactored 😉. It turns out Odoo's framework is not that bad when you discover it. It's just not documented.
[MIG] document_url
* bump version to 9.0.1.0.0 and make it installable
* Update JS structure
* Add css in order to be compliant with odoo style
* Add a README.rst and OCA conventions
* Improve selector
* add fr.po for fr translation
* open link with target='_blank'