* keep query on pdf link so that customers have access to the pdf when
using the access token instead of having an access rights error;
* add redirect to record override that allow to take into account
/mail/view links containing an access token for invoices like what
is already supported for sale orders;
* improve action buttons display;
* reduce headers and better display invoice name and customer address;
As already done for sale, customer portal for account is moved to account
module directly. Account now depends on portal module and website module
is not necessary anymore to display the account customer portal.