move all functionality to common js

webfront/pages/index.html

@@ -50,9 +50,11 @@
                 Curvilinear? Inputting some random json?
                 -->
             </div>
+            <!--
             <div class="gen_set menu-item">
                 <p class="menu-header">Settings</p>
             </div>
+            -->
             <div class="about menu-item">
                 <p class="menu-header">About</p>
                 <p>More information can be found along with the <a href="https://ulimoen.dev/git/mulimoen/SBPonWEB">source code</a>.</p>
@@ -62,6 +64,7 @@
             <button title="Menu" class="control-item" id="toggle-menu" type="button">☰</button>
             <button title="Play/pause" class="control-item" id="toggle-playing">▶️/⏸️</button>
             <button title="Reset" class="control-item" id="reset">🔄️</button>
+            <button title="Change field" class="control-item" id="fieldButton">C</button>
         </div>
     </body>
 </html>