Added dynamic views (instead of the stored views)

[antoineludeau]

Context

The transfer process from postgresql to mongodb is using stored views in postgresql to calculate some extra data such as postal code data and geo data (bounding boxes, centroid, ...). Currently, this process can be quite long.

Enhancement

In order to improve the performances of the transfer process, this PR :

• delete the stored view (some calculs were done on all the addresses and common toponyms of the database instead of targeting only a specific district),
• add dynamic views to target only one district,
• add rights for ban-plateforme user to use the "external" schema tables.
• modify the structure of the views to improve performances (delete subqueries in CASE statements that lower the perf + add Common Table Expressions (CTEs) to improve readability).