Lookup data field - limitation if filtering is needed

@nigel described here how it works: LookUp with conditions - #10 by nigel. Hope it helps. :raised_hands:

We also plan to add the ability to filter on lookup fields: Lookup Fields/Formulas should be filterable/colorable/aggregatable in the grid view (#676) 路 Issues 路 Baserow / baserow 路 GitLab.