db schema: grp of address table defaults to 1

- 0 (previous default value) is not allowed as group id

lib/srdb1/schema/address.xml

@@ -30,7 +30,7 @@
         <name>grp</name>
         <type>unsigned short</type>
         <size>5</size>
-        <default>0</default>
+        <default>1</default>
         <description>Group</description>
         <natural/>
     </column>