Content cleanup: fix unclosed tags, remove em/en dashes, verify translations

- Fixed 3 SI event posts that were missing their </article> and </main> tags
- Replaced all punctuation em-dashes and spaced en-dashes (435 across 64 files)
  with commas; normalized a SI date range to a hyphen to match EN/MK
- Verified the new Gallery + in-post gallery content is fully translated in
  EN/MK/SI (headings, titles, links, nav labels) with no English leftovers

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

en/privacy-policy/index.html

@@ -273,7 +273,7 @@
 
                 <h2>Cookies</h2>
 
-                <p>This website uses strictly necessary and preference cookies, and Google Analytics to measure how the site is used &mdash; but only if you accept analytics cookies through our consent banner. We do not use advertising cookies. You can read more in our <a href="../cookie-policy/">Cookie Policy</a>.</p>
+                <p>This website uses strictly necessary and preference cookies, and Google Analytics to measure how the site is used, but only if you accept analytics cookies through our consent banner. We do not use advertising cookies. You can read more in our <a href="../cookie-policy/">Cookie Policy</a>.</p>
 
                 <h2>Data security</h2>