Many fixes + changes. Very close to alpha

Author: 28raining

filterAnalyzer/index.html

@@ -13,6 +13,7 @@
   <!-- <script src="js/algebrite_v1p2.bundle-for-browser-min.js"></script> -->
   <script src="js/startupSchematic.js"></script>
   <script src="https://fred-wang.github.io/mathml.css/mspace.js"></script>
+  <script type="module" src="https://unpkg.com/giscus?module"></script>
 
   <!-- <link type="text/css" rel="stylesheet" href="application.css" /> -->