[IMP] crm,sale_crm : set group for address type field in sale_crm

Hello,

->  It will restrict address type field to 'group_sale_delivery_address' group.
->  Rename "subject" into "Opportunity"
->  Add a placeholder "e.g. product pricing"

More Details:
Task: https://www.odoo.com/web#id=8825&view_type=form&model=project.task&menu_id=3942&action=327
pad: https://pad.odoo.com/p/r.6drgLyS9TNu0oT1J

Thanks
jas-odoo