Geometry simplification

* 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

compensation/views/eco_account/eco_account.py

@@ -22,7 +22,7 @@ from konova.forms import SimpleGeomForm
 from konova.settings import ETS_GROUP, DEFAULT_GROUP, ZB_GROUP
 from konova.sub_settings.context_settings import TAB_TITLE_IDENTIFIER
 from konova.utils.message_templates import CANCEL_ACC_RECORDED_OR_DEDUCTED, RECORDED_BLOCKS_EDIT, FORM_INVALID, \
-    IDENTIFIER_REPLACED, DO_NOT_FORGET_TO_SHARE
+    IDENTIFIER_REPLACED, DO_NOT_FORGET_TO_SHARE, GEOMETRY_SIMPLIFIED
 from konova.utils.user_checks import in_group
 
 
@@ -84,6 +84,11 @@ def new_view(request: HttpRequest):
                     )
                 )
             messages.success(request, _("Eco-Account {} added").format(acc.identifier))
+            if geom_form.geometry_simplified:
+                messages.info(
+                    request,
+                    GEOMETRY_SIMPLIFIED
+                )
             return redirect("compensation:acc:detail", id=acc.id)
         else:
             messages.error(request, FORM_INVALID, extra_tags="danger",)
@@ -149,6 +154,11 @@ def edit_view(request: HttpRequest, id: str):
             # The data form takes the geom form for processing, as well as the performing user
             acc = data_form.save(request.user, geom_form)
             messages.success(request, _("Eco-Account {} edited").format(acc.identifier))
+            if geom_form.geometry_simplified:
+                messages.info(
+                    request,
+                    GEOMETRY_SIMPLIFIED
+                )
             return redirect("compensation:acc:detail", id=acc.id)
         else:
             messages.error(request, FORM_INVALID, extra_tags="danger",)