Module

brand_external_report_layout

Describe the bug

• the model brand.document.layout is defining company_details (and should define is_company_details_empty also, as declared in [16.0][BUG][brand_external_report_layout] is_company_details_empty missing #167 ) so it's not possible to use the same brand for different companies
• the company Qweb variable is replaced by a res.brand object in reports, so every module inheriting company to add information in reports is conflicting (for example, l10n_ca from Odoo with account_fiscal_country_id and l10n_ca_pst fields)

To Reproduce

16.0:

Steps to reproduce the behavior:

1. Create a new database with brand_external_report_layout installed and demo data
2. Go to settings and set a specific document layout for first company (this should set the company details by default)
3. Set the company with Brand use level = optional
4. Switch company and do the same for the second company, with another layout
5. Create a brand and set its document layout (for the moment, [16.0][BUG][brand_external_report_layout] is_company_details_empty missing #167 is preventing to go further...)
6. From now on, every sale, invoice, etc. that will use this brand will have the same address (company/brand details) for both companies

Expected behavior
I think only "style" fields should be overridden by brands.

Additional context
I'll propose a PR that keeps the original company object and temporarily modify it with data from brand then go back to original after the report is generated.