ReactJS app moved to different folder

ReactJS app is moved to reactjs/dotnet-comment-app. Removed
project.lock.json file from source control.

samples/features/json/reactjs/dotnet-comments-app/.gitignore

@@ -6,4 +6,5 @@ obj/*
 *.sln
 *.log
 Properties/PublishProfiles/*
-appsettings.development.json
+appsettings.development.json
+project.lock.json

samples/features/json/reactjs/dotnet-comments-app/appsettings.json

@@ -6,5 +6,8 @@
       "System": "Information",
       "Microsoft": "Information"
     }
+  },
+  "ConnectionStrings": {
+     "CommentsDb": "Server=.;Database=CommentsDb;Integrated Security=true"
   }
 }