Social network link anonymous connexion

In menu, add social newtork link when user is connected in anonymous mode

front/dist/resources/html/gameMenu.html

@@ -15,6 +15,14 @@
     #gameMenu section {
         margin: 10px;
     }
+    section#socialLinks{
+        position: absolute;
+        margin-bottom: 0;
+    }
+    section#socialLinks img{
+        width: 32px;
+        cursor: url('/resources/logos/cursor_pointer.png'), pointer;
+    }
 </style>
 
 <div id="gameMenu" hidden>
@@ -38,5 +46,9 @@
         <section id="adminConsoleSection" hidden>
             <button id="adminConsoleButton">Admin console</button>
         </section>
+        <section id="socialLinks" hidden>
+            <a class="not-button" href="https://www.facebook.com/workadventurebytcm" target="_blank"><img class="not-button" src="/resources/objects/facebook-icon.png"/></a>
+            <a class="not-button" href="https://twitter.com/Workadventure_" target="_blank"><img class="not-button" src="/resources/objects/twitter-icon.png"/></a>
+        </section>
     </main>
 </div>