Enable gavel icon and remove non used icons

Author: williamdes

wdes.fr/assets/vendor/MaterialDesignIcons/scss/materialdesignicons.scss

@@ -7,25 +7,21 @@ $mdi-icons-allowed: (
     'list': 1,
     'home': 1,
     'account': 1,
-    'head-lightbulb-outline': 1,
-    'notebook-outline': 1,
     'code-tags': 1,
     'github': 1,
     'gitlab': 1,
     'twitter': 1,
     'linkedin': 1,
     'stack-overflow': 1,
     'email': 1,
-    'minecraft': 1,
     'at': 1,
     'domain': 1,
     'web': 1,
-    'briefcase': 1,
+    'gavel': 1,
     'chevron-up': 1,
     'x': 1,
     'chevron-right': 1,
     'key-chain-variant': 1,
-    'projector-screen': 1,
     'newspaper': 1,
     'key-link': 1,
     'chevron-double-down': 1,