[FIX] point_of_sale: field type on bank statement line no longer exists
[FIX] Restore /login redirection on SessionExpired

The feature was broken due to an incompatibility
when forward porting 624f256 and a78e27f
[FIX] stock_account: Preserve action_done return value

stock_account module override the action_done method of stock.move but does not return the same value
This causes problems when calling this function from xmlrpc because the resulting value is now None and that is not allowed to be marshaled by default.
[MERGE] Forward-port of saas-5 up to 9ce08b7