Supplier List: New visibility features

Keeping supplier data accurate and complete is easier with three additions to the supplier list.

• Data conflicts column. A new column flags suppliers whose self-reported data differs from what you have on file, so you can spot and resolve discrepancies at a glance instead of opening each supplier individually.
• Contact information column. See at a glance which suppliers have provided a contact email and which haven't.
• Filter by either column. Both new columns come with matching filters, so you can narrow the supplier list down to exactly the suppliers that need your attention.
• Export to CSV. The supplier list can now be exported to a CSV file, respecting whatever filters you currently have applied — handy for offline review or sharing with colleagues.

This release also includes various bug fixes as well as improvements to display and usability.