Added target/* to the .gitignore file
Fixing request to 2.47.0 til https://github.com/request/caseless/issues/9 has been fixed
Not sticking `app` on the expressjs request object

This was (indirectly) breaking cookie-Session as `app` is a restricted
variable on the ExpressJS request object.
Made request a devDependency only
Renamed ghApp back to app for internal API