Main changes are :
- Change fields declaration
- Update metaclass to add field to nmspc instead of _columns
- Add v8's version of compute/reverse/search function of
    disable_per_company field

The field analytic dimensions is now a function and not a char to avoid the creation of a database column

Also remove data in account_numergy

analytic_fields_view_get: fixed an issue when using the oe_analytic div for tree views. Fields are now generated with an empty JSON dict as their default 'modifiers' attribute.

Bound dimensions: if an analytic code ID is passed to create or write, it will be ignored unless the key "force_code_id" is set to True in the context.