Self-host Font Awesome instead of loading it from a CDN

Switching CDN provider (cdnjs -> jsdelivr) didn't fix icons rendering as fallback glyph-code text — every icon in the picker still failed the same way, which points to something in the user's browser/network blocking cross-origin webfont loading specifically (common with strict tracking/fingerprinting protection, e.g. Brave's font-blocking or an ad-blocker's remote-font rule), not the CDN itself.

Downloaded Font Awesome 5.15.4's CSS and the solid-weight webfont files (the only style this app's icon classes actually use) into static/fontawesome/, served same-origin like style.css and pjax.js already are. Removes the CDN dependency entirely for icons rather than betting on a second provider.

templates/play.html

@@ -8,7 +8,7 @@
 <link rel="stylesheet" href="{{ google_fonts_link }}">
 <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@1.0.2/css/bulma.min.css">
-<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.15.4/css/all.min.css">
+<link rel="stylesheet" href="{{ url_for('static', filename='fontawesome/css/all.min.css') }}">
 <style>
   body{ margin:0; background:#000; }
   /* ---------- Zone de jeu à proportion fixe (voir #playFrame) ----------

templates/screen_edit.html

@@ -5,7 +5,7 @@
 {% block extra_head %}
 <link rel="stylesheet" href="{{ google_fonts_link }}">
 <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css">
-<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.15.4/css/all.min.css">
+<link rel="stylesheet" href="{{ url_for('static', filename='fontawesome/css/all.min.css') }}">
 {% endblock %}
 {% block breadcrumb %}
 <li><a href="{{ url_for('game_dashboard', slug=game.slug) }}">{{ game.name }}</a></li>