refs #2341 - disable magic_quotes_runtime for consistency with index.php; plus, it's deprecated in php 5.3 and buggy with MYSQLI (http://bugs.php.net/52221)

git-svn-id: http://dev.piwik.org/svn/trunk@4544 59fd770c-687e-43c8-a1e3-f5a4ff64c105