Nominatim: change password property to type Password

preferences/_____PREFERENCES_PROJECT/_____PREFERENCES_PROJECT.aod

@@ -85,10 +85,6 @@
       <name>nominatim.user</name>
       <property>aditouser</property>
     </customStringProperty>
-    <customStringProperty>
-      <name>nominatim.pw</name>
-      <property>useradito</property>
-    </customStringProperty>
     <customIntegerProperty>
       <name>duplicates.dataBlockSize</name>
       <property v="5000" />
@@ -108,6 +104,11 @@
       <description></description>
       <property v="false" />
     </customBooleanProperty>
+    <customPasswordProperty>
+      <name>nominatim.pw</name>
+      <description></description>
+      <property>useradito</property>
+    </customPasswordProperty>
   </customProperties>
   <customConfigProperties>
     <customBooleanProperty>