Update and cleanup few JS modules

Diff again consists of some itunes:subtitle symbol escaping changes (not
 included into the paste), Axios and Boostrap autogenerated JS files
 changes, and css changes by the link:
https://pastebin.com/5kW7B9U2

I've checked and everything works the same as in the version before, and
 looks precisely the same.

Aside from update, I've removed two unused modules and requirements file
 for the removed Python script.

hugo/.nvmrc

@@ -1 +1 @@
-10
+22

hugo/data/manifest.json

@@ -1,10 +1,10 @@
 {
-    "/app.js": "/app.js?id=f78300e8369c1b3dbd3a",
-    "/app.css": "/app.css?id=bcab11d6152e4d17e80b",
-    "/app-dark.css": "/app-dark.css?id=aa16ba9824f05d6b6fac",
-    "/vendor.css": "/vendor.css?id=5baeec4545b1a95605bc",
-    "/vendor-dark.css": "/vendor-dark.css?id=a02f079412829987e177",
+    "/app.js": "/app.js?id=183b4e021b78d8707680",
+    "/app.css": "/app.css?id=dee8b4e8733d44d4c26f",
+    "/app-dark.css": "/app-dark.css?id=1fe24aeaaea2678b2115",
+    "/vendor.css": "/vendor.css?id=39509e059daafec80061",
+    "/vendor-dark.css": "/vendor-dark.css?id=72c5f82e4d133c1555cf",
     "/manifest.js": "/manifest.js?id=3c768977c2574a34506e",
-    "/vendor.js": "/vendor.js?id=b0a0971018ff794142b7",
+    "/vendor.js": "/vendor.js?id=5739b2456672d5d7affe",
     "/images/icons-sprite.svg": "/images/icons-sprite.svg?id=0a38998db079325220ba"
 }