[IMP] account: remove inexistant sequence get

There is no sequence for account.bank.statement.line to prefill the field name (Communication), better remove it.
[FIX] crm: field opportunity_ids contains only opportunities

The field opportunity_ids and opportunity_count should only contain opportunities (and not leads).
This was confusing on the partner kanbans where the field opportunity_count included leads.
[FIX] base_action_rule: typo when committing base action rule
update, evaluate the action filter_domain, not its non-existing context.
[REV] website: new blog demo snippets

This reverts commit 7246b8105bdebdd175ca82d5018f68e15e60eb43.
[HR] clean model in a changes the hr_applicant model in add the _content_serach method and hr_contract models in add the xml id on the serach and remove _resolve_department_id_from_context method in hr_recruitment model.and add a method _broadcast_welcome hr_recuriemnt model.