[IMP] formatting of o2m and m2m fields in list views, courtesy of William Beltrán

backported from trunk revision xmo@openerp.com-20120607101329-aq0caswlxamd8z0n

lp bug: https://launchpad.net/bugs/942894 fixed

bzr revid: xmo@openerp.com-20120607103240-edk8759inv2jiw2q

addons/web/static/src/js/formats.js

@@ -134,6 +134,9 @@ openerp.web.format_value = function (value, descriptor, value_if_empty) {
         case 'many2one':
             // name_get value format
             return value[1];
+        case 'one2many':
+        case 'many2many':
+            return _.str.sprintf(_t("(%d records)"), value.length);
         case 'datetime':
             if (typeof(value) == "string")
                 value = openerp.web.auto_str_to_date(value);