Purpose:
Modernizes and facilitates files upload in manufacturing app.
In this Commit:
- Show the image in Kanban.
- Allow to access a preview of the file when clicking on it in the
Kanban view.
- Add a 'Edit', 'Delete' and 'Download' in kanban card dropdown menu.
- Add Upload button in control panel to upload document which will
create new record of `mrp.document` and also add a testcase for it.
task-1960733
closesodoo/odoo#42168
Related: odoo/enterprise#8977
Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>
