Enable checkbox selection on contacts list in mail compose

skins/elastic/templates/compose.html

@@ -15,7 +15,7 @@
 		<roundcube:object name="addressbooks" id="directorylist" class="treelist listing iconized"
 			summary="ariasummarycomposecontacts" />
 		<roundcube:object name="addresslist" id="contacts-table" class="listing iconized"
-			noheader="true" role="listbox" />
+			noheader="true" role="listbox" data-list="contact_list" />
 	</div>
 	<div class="footer">
 		<roundcube:button command="add-recipient" prop="to" type="link" title="to"