generateMovementListForStockOptimisation was raising error when there was inventories.
The method was assuming that doing getObject() on an inventory line (from
getFutureInventoryList) was always returning a movement. But sometimes we get
the inventory itself. So do not use getVariationCategoryList, but use the variation_text
stored in the stock table.

- Allow superuser to get RSS ;
- Remove useless portal_skin=RSS paremeter.

Allow user to select which columns to display on module.
A new panel has been added for the UI.
The selectable column list is calculated from the columns and all_columns parameters.
Configuration is for now stored in the URL (as sort).

[erp5_pdm, erp5_trade] Fix bad field library field id. Rename ledger field library proxy field from my_ledger to my_view_mode_ledger.

[ERP5/tests/testERP5Commerce.py] quantity_unit/unit/piece category is used but it does not exist in this test. Add quantity_unit/unit/piece in afterSetUp.

To use non-existing category may lead an unexpected result. This time, getAcquiredCategoryList did not work correctly, then category values of products were not correctly indexed and test_17_getProductListFromWebSection failed.

Revert "[ERP5/tests/testERP5Commerce.py] Add erp5_configurator_standard_categories business template to provide quantity_unit/unit/piece."

This reverts commit 93c6b048.

erp5_configurator_standard_categories depends on too many business templates. I gave up using it.

[ERP5/tests/testERP5Commerce.py] Add erp5_configurator_standard_categories business template to provide quantity_unit/unit/piece.

To use non-existing category may lead an unexpected result. This time, getAcquiredCategoryList did not work correctly, then category values of products were not correctly indexed and test_17_getProductListFromWebSection failed.

/reviewed-on nexedi/erp5!538

This reverts commit 6687e7e0.

Test for bugfix /#/bug_module/20171208-5E8D43

/reviewed-on nexedi/erp5!529

[erp5_base] Add following movement groups to Order Builder. Order Builder should be able to use the same movement groups as Delivery Builder.

First Causality Movement Group
Invoice Movement Group
Previous Causality Movement Group
Property Grouping Movement Group