change default chunking to auto
 add constants for chunking selection values
  use base_context
 Update French translations

WHERE queries in xbus-odoo's emitter on this column.

(they can have multiple lines now)

Note that the colors attribute is deprecated since odoo 9.0.

(This is no longer the default value in recent Odoo versions.)

Check if default option is given before using it.
Test default option.

remove unused variables