Be more verbose with ip debug output

services/web/app/coffee/router.coffee

@@ -199,7 +199,11 @@ module.exports = class Router
 				languages: []
 
 		app.get "/ip", (req, res, next) ->
-			res.send("ShareLaTeX sees your IP as: #{req.ip}")
+			res.send({
+				ip: req.ip
+				ips: req.ips
+				headers: req.headers
+			})
 
 		app.get '/oops-express', (req, res, next) -> next(new Error("Test error"))
 		app.get '/oops-internal', (req, res, next) -> throw new Error("Test error")