add bootstrap exception

Author: NuclearPhoenixx

index.html

@@ -11,7 +11,7 @@
   	<meta name="language" content="English">
     <!--
       CSP: Only allow loading resources from this website.
-      Style-src: unsafe-inline needed for Plotly.js styles.
+      Style-src: unsafe-inline needed for Plotly.js and bootstrap styles.
       Img-src needs data: and blob: otherwise it cannot load some images.
       Connect-src is used for fetch (Custom isotope list URL) - * allow all.
     -->