Master review charfield size jar

Hello,

Task: Review Size on char fields

Addons :

 * In lot of char fields, there is a useless size attribute.
 * remove useless size attribute in lot of char fields.
 * add max size on selection field.

More Details:
https://www.odoo.com/web?#id=5400&view_type=form&model=project.task&menu_id=3942&action=327
https://pad.odoo.com/p/r.Vd4ZdqhkfgWN8cw9

Thank You.