[FIX] crm: While processing the 'Convert to Opportunity' wizard in leads view, if the system found matching partner from the information provided in lead and suggested that partner in the wizard, and later if we decided not to link the opportunity to existing partner but to create a new one, it never create one, but will link to the priorly suggested partner: (Maintenance Case : 596231)
[MERGE] [FIX] crm: fixed lead to opportunity wizard customer creation policy (opw 596231).

When choosing to link to an existing customer, then changing the action to create
a new customer or to avoid linking, the newly created opportunity was linked
to the previously chosen customer, due to the partner_id field not being
reset and used in the conversion process.

This field is not reset when changing the conversion action, leading to the action
being correctly taken into account.
[FIX] crm_claim: the 'My Company' filter was wrong, not useful and not possible to achieve. It is therefore set as invisible, and its domain set as void. This won't break any inheriting views, and this filter is ready to be removed in 8.0