Review PDM terms and report dialogs

For PDM/Trade we use:

• "Site" for node category
• "Warehouse" for node
• "Owner" for section category
• "Owner" for section

For Invoicing/Accounting this does not change.

Also, since in PDM/Trade context we are sometimes only taking care of physical movements/quantities and not the ownership, make sure that:

• "Site" is first in report dialogs
• "Section Category" is not initialised from preference, so that reports show the quantities in a location regardless of the ownership