Interwiki fix

Any InterWiki linkid in select plugin syntax was wrongly converted to Google lucky search url when used with DokuWiki 2013-05-10 (Weatherwax). It seems that renderer object newly created in function getSelectUrlAndName() can not correctly resolve InterWiki through _resolveInterWiki() call.

After some try and errors, I found that $renderer->_resolveInterWiki() call in rederer function can solve successfully Interwiki linkid. Therefore I would like to propose to merge code of getSelectUrlAndName() into render(). There may be more good solution for this issue, anyway this modified syntax.php tested and worked fine under IIS6 / Windows 2003 Server, with PHP 5.4.15.