* (potentially) fixes a bug occuring on non multipolygon geometries processed in an api call
* simplifies casting into multipolygon
* simplifies casting into rlp srid (epsg:25832)
* adds another validity check to SimpleGeomForm (is_size_valid) to make sure the area of the entered geometry is somehow rational (>= 1m²)
* optimizes performance of django command sanitize_db
* extends Geometry model with two new attributes, holding timestamps when a parcel calculation has been started and ended
* finally drops unused update_parcel_wfs in favor of update_parcels in Geometry model
* refactors update_parcel method
* adds geometry buffer fallback in schneider/fetcher.py to avoid emptying of geometries when parcels shall be fetched
* finally removes utils/wfs/spatial.py
* extends GeomParcelsView according to #381
* updates translations
* removes redundant psycopg2-binary requirement
* adds eco account unit tests
* adds validity check to eco account form to check on existing deductions and potential conflict with reduced deductable surface
* improves geojson handling on SimpleGeomForm
* adds/updates translation
* simplifies geometries on SimpleGeomForm if threshold GEOM_MAX_VERTICES has been exceeded
* geometry is iteratively simplified to find a proper tolerance value which satisfies the GEOM_MAX_VERTICES threshold
* fixes race condition on geometry conflict calculation if performed in background process
* simplifies access to smaller buffered geometry
* adds mapping of "qm"->"m2" for UnitChoice in API usage for backwards compatibility
* fixes GDALException in case of provided feature (import) without geometry content
* modifies 500.html template to inform the user about the admins being informed automatically
* adds clamping of 3D geometries to 2D geometries if uploaded using the map importer
* extends tests for payment-document linkage
* fixes bug in team-admin selection where autocomplete could not be resolved properly
* adds needed migrations
* refactors forms.py (700+ lines) in main konova app
* splits into forms/ and forms/modals and single class/topic-files for better maintainability and overview
* fixes bug in main konova app migration which could occur if a certain compensation migration did not run before
