Finalize webpage and bug fixes

Finished the user guide and fixed related issues.

.idea/bayesvalidrox.iml

@@ -5,7 +5,7 @@
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
     </content>
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="Python 3.10 (env_bvr)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="PyDocumentationSettings">