Add Student Welcome Guide, legal pages, and working newsletter

Student Welcome Guide (Phase 1):
- Landing + 5 topic pages (journey, bachelor, master, deadlines, eVS)
  in EN/SI/MK, reusing the article auto-TOC
- New css/pages/_guide.css components and a 3:1 hero image placeholder
- Functional client-side "Build my route" tool (student-guide.js)
- "Student Welcome Guide" menu link wired site-wide

Legal pages:
- Trilingual Privacy Policy and Cookie Policy (GDPR-oriented,
  MailerLite disclosed, IP RS complaint route)
- Footer legal strip + Organisation column links wired site-wide,
  depth-aware, plus header/footer templates

Newsletter:
- MailerLite subscribe handler in main.js upgrades both form variants
  on every page: validation, double opt-in, inline trilingual status
- Subscribe status styles in css/pages/_projects.css

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

si/get-to-know-slovenia/index.html

@@ -55,7 +55,7 @@
                     <li class="menu-item menu-item-has-children">
                         <a href="#">Za študente</a>
                         <ul class="dropdown-menu">
-                            <li><a href="#">Vodič za bruce</a></li>
+                            <li><a href="../../si/student-welcome-guide/">Vodič za bruce</a></li>
                             <li><a href="#">Mentorski program</a></li>
                             <li><a href="#">Pogosta vprašanja</a></li>
                             <li><a href="../../si/get-to-know-slovenia/">Spoznaj Slovenijo</a></li>
@@ -127,7 +127,7 @@
             <li class="menu-item menu-item-has-children">
                 <a href="#">Za študente</a>
                 <ul class="dropdown-menu">
-                    <li><a href="#">Vodič za bruce</a></li>
+                    <li><a href="../../si/student-welcome-guide/">Vodič za bruce</a></li>
                     <li><a href="#">Mentorski program</a></li>
                     <li><a href="#">Pogosta vprašanja</a></li>
                     <li><a href="../../si/get-to-know-slovenia/">Spoznaj Slovenijo</a></li>
@@ -183,7 +183,7 @@
                     <input type="email" placeholder="Vnesite svoj e-mail">
                     <button type="submit" class="btn btn-primary-orange">Naroči se</button>
                 </form>
-                <p class="privacy-note">Skrbimo za vaše podatke v naši <a href="#">politiki zasebnosti</a>.</p>
+                <p class="privacy-note">Skrbimo za vaše podatke v naši <a href="../../si/privacy-policy/">politiki zasebnosti</a>.</p>
             </div>
         </section>
 
@@ -321,6 +321,8 @@
                     <a href="#">O nas</a>
                     <a href="#">Kontakt</a>
                     <a href="#">Dokumentacija</a>
+                    <a href="../../si/privacy-policy/">Politika zasebnosti</a>
+                    <a href="../../si/cookie-policy/">Politika piškotkov</a>
                 </div>
             </div>
         </div>
@@ -328,8 +330,8 @@
         <div class="footer-bottom">
              <p>© MŠOS org 2023 Vse pravice pridržane.</p>
             <div class="legal-links">
-                <a href="#">Politika zasebnosti</a>
-                <a href="#">Politika piškotkov</a>
+                <a href="../../si/privacy-policy/">Politika zasebnosti</a>
+                <a href="../../si/cookie-policy/">Politika piškotkov</a>
                 <a href="#">Pravni pogoji</a>
             </div>
         </div>