Check add_faq permission (#1857)
Check add_faq permission (#1857)

* Check permission to add new FAQs

* Add check if the current user is logged. Change 'add_faq' to 'addfaq'.

* Remove unnecessary brackets.
thorsten/phpMyFAQ,thorsten/phpMyFAQ,thorsten/phpMyFAQ,thorsten/phpMyFAQ