Enable import of axis and area independently from areas of responsibility In preparation of generating the areas of responsibility from data previously imported by a sys_admin! Having the CTE as an item in the FROM-list prevents the SELECT from returning any rows if the CTE returns no rows. Thus, use the CTE only in scalar subqueries that are relevant only if the statement is executed by somebody without sys_admin role. Also introduced an ST_CollectionExtract() in the axis INSERT because here too, the intersection is not guaranteed to have the right dimensionality.

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