Show localized intelligent search

The intelligent search menu is always shown in English. These changes
allow users to view it with localized names and keywords.
Refactoring session variable for dashboard menu

Let's adopt $_SESSION['dashboardMenus'][$locale]
instead of
$_SESSION['dashboardMenus'.$locale]
Merge pull request #939 from mlocati/fix-intelligent-search-localization

Show localized intelligent search