Add trilingual FAQ page and wire FAQ links site-wide

New /<lang>/faq/ page (en/si/mk) with categorised accordion Q&A that link into the Student Welcome Guide, plus a contact/Viber block. Nav 'FAQs' links and 'See all FAQs' buttons across the site now point to it.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

en/about-us/index.html

@@ -57,7 +57,7 @@
                         <ul class="dropdown-menu">
                             <li><a href="../../en/student-welcome-guide/">Student Welcome Guide</a></li>
                             <li><a href="#">Mentorship Programme</a></li>
-                            <li><a href="#">FAQs</a></li>
+                            <li><a href="../../en/faq/">FAQs</a></li>
                             <li><a href="../../en/get-to-know-slovenia/">Get to know Slovenia</a></li>
                             <li><a href="../../en/get-to-know-macedonia/">Get to know Macedonia</a></li>
                         </ul>
@@ -129,7 +129,7 @@
                 <ul class="dropdown-menu">
                     <li><a href="../../en/student-welcome-guide/">Student Welcome Guide</a></li>
                     <li><a href="#">Mentorship Programme</a></li>
-                    <li><a href="#">FAQs</a></li>
+                    <li><a href="../../en/faq/">FAQs</a></li>
                     <li><a href="../../en/get-to-know-slovenia/">Get to know Slovenia</a></li>
                     <li><a href="../../en/get-to-know-macedonia/">Get to know Macedonia</a></li>
                 </ul>