IssueID #1002: added id attribute needed for superbaza query

resources/schema/inventory.xsd

@@ -185,6 +185,7 @@
     <xsd:simpleContent>
       <xsd:extension base="xsd:string">
         <xsd:attribute name="lexical_unit_lexeme_id" type="xsd:int"/>
+        <xsd:attribute name="lexeme_id" type="xsd:int"/>
         <xsd:attribute name="role" use="required">
           <xsd:simpleType>
             <xsd:restriction base="xsd:string">