[IMP] base: Clean res.lang tree view
[IMP] base: Clean res.lang tree view

1. Set limit to 200 to display all current 82 languages
in one page (current limit is 80/82).

2. Move some fields to debug mode.

3. Add a button to directly load a language.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo