In testInventoryAPI we test several cases of getNextNegativeInventory.
Remove this test which is long, hard to understand, and only test
a case that is not really making sense (current stock with negative
inventory)

This avoid differences like 07:55:27 != 07:55:26 in tests

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This is needed to take into account the node when looking at the history
of movements

So all newSimulation expected failures are removed. Make
generateMovementListForStockOptimisation looking min_flow and max_delay
on supply lines.

Introduce a getNextAlertInventoryDate in addition to
getNextNegativeInventoryDate. This allows to know when an inventory
will be below a reference quantity. This is particularly helpful
to know when an inventory is below the minimal admitted stock

So it's no longer a newSimulation expected failure. Review method
generateMovementListForStockOptimisation of builders to nicely
generated temporary movements depending on future negative stocks.

Like this we stop using Resource_zGetInventory which is less
and less used. Indeed, it's better to only have Resource_zGetInventoryList
and sometimes returns a list of a single line.

Now production steps are defined in business process which
are using trade_phase. indistrial_phase was used at the time
of supply chains

MRP was broken and unused for a long time, since legacy simulation was dropped.
This commits resuscitates MRP, at least:
- expanding, for both operation and sourcing
- building of production reports & production packing lists

Business Processes replaces Supply Chains.
trade_phase replaces industrial_phase
industrial_phase is now used to variate partially produced resources.

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