reactivate module stock_reserve
port models and method to api 8.0
port onchanges
change type to stock.picking.type
improve descriptor
improve action_view_reservations from product
replace product_qty by product_uom_qty
fix default_get to ensure product_qty is not set
some products' fields moved in stock_accout. removing them to make the test pass as it isn't a dependancy.
fix flake8 warnings
update test

don't use half the quantity so that the reserved qty is different from
available qty
more stock_reserve tests

* check that multiple reservations are handled correctly
* check that various UOM are handled correctly
product_reserve: test orderpoint

test that reservations will trigger orderpoint procurements
fix typo in docstring
add test for expiration of reservations

fix a bug in the code to make the tests green
fix button to open related move
fix domain using list instead of string
Merge pull request #8 from yvaucher/8.0-stock_reserve

8.0 port module stock_reserve