Display quantities of many product by warehouse

It may be useful to show the current quantities by warehouse for a set of products so they can be compared and analyzed. For example to take decision with https://discuss.tryton.org/t/improve-delivery-time/3686.

assigned to @ced

added stock type::feature + 1 deleted label

review316831002 updated at https://codereview.tryton.org/316831002/#ps349441002

review316831002 updated at https://codereview.tryton.org/316831002/#ps349461003

added 1 deleted label and removed 1 deleted label

review316831002 updated at https://codereview.tryton.org/316831002/#ps359171002

New changeset 13bee1939a05 by Cédric Krier in branch 'default':
Show quantities by warehouse for many products
https://hg.tryton.org/modules/production/rev/13bee1939a05

added 1 deleted label and removed 1 deleted label

closed

New changeset e3dc8e58d39c by Cédric Krier in branch 'default':
Show quantities by warehouse for many products
https://hg.tryton.org/modules/stock/rev/e3dc8e58d39c

New changeset 1459016af134 by Cédric Krier in branch 'default':
Show quantities by warehouse for many products
https://hg.tryton.org/tryton-env/rev/1459016af134

New changeset f8a5ae18929c by Cédric Krier in branch 'default':
Prevent IN clause with empty list
https://hg.tryton.org/modules/stock/rev/f8a5ae18929c

New changeset 4b08d2ca2593 by Cédric Krier in branch 'default':
Prevent IN clause with empty list
https://hg.tryton.org/tryton-env/rev/4b08d2ca2593