Make rank assignments configurable

The initial search and address rank is saved in a table
that is set up from a json configuration file. Ranks may
be assigned on a country level according to class and
type of the object. Special handling that depends on the
geometry or OSM type is still hard-coded in placex insert.

The new default config file mimicks the current assignment
as close as possible. A couple of exceptions have been
removed, most notably the exception for Irish townlands.

lib/setup/SetupClass.php

@@ -2,6 +2,8 @@
 
 namespace Nominatim\Setup;
 
+require_once(CONST_BasePath.'/lib/setup/AddressLevelParser.php');
+
 class SetupFunctions
 {
     protected $iCacheMemory;
@@ -272,6 +274,9 @@ class SetupFunctions
         if ($bReverseOnly) {
             $this->pgExec('DROP TABLE search_name');
         }
+
+        $oAlParser = new AddressLevelParser(CONST_Address_Level_Config);
+        $oAlParser->createTable($this->oDB, 'address_levels');
     }
 
     public function createPartitionTables()