add environ error message

add to environ some data and some codereview pages
some fix oembed and OpenGraph

wwwroot/json/oembed.json

@@ -2,7 +2,7 @@
   "embeds": [
     {
       "type": "rich",
-      "url": "yawaflua.ru",
+      "url": "https://yawaflua.ru/",
       "title": "ReadAbout yawaflua",
       "description": "Here you can get info about yawaflua: social networks, programming languages that he knows and his projects.",
       "thumbnail": {