Updated the deprecated jquery 'live' function and solve php strict standards error

When you use a php debugger or you review the wordpress log a lot of lines appears as the next one:

[14-Oct-2014 09:37:53 UTC] PHP Strict Standards:  Only variables should be assigned by reference in /../wp-content/plugins/qtranslate-slug/qtranslate-slug.php on line 1331

In the other hand the jQuery live function is deprecated and will cause errors.