use place type of for result object in address parts

Boundaries shound derive the address part type from the
linked place if possible. This was already implemented
for the address objects but not for the address information
from the address itself.

Fixes #1949.

test/bdd/api/search/queries.feature

@@ -182,3 +182,11 @@ Feature: Search queries
         Then results contain
           | class   | type |
           | highway | residential |
+
+
+    # github #1949
+    Scenario: Addressdetails always return the place type
+       When sending json search query "Rotherbaum" with address
+       Then result addresses contain
+         | ID | suburb |
+         | 0  | Rotherbaum |