replace deprecated web_console config

Author: bpurinton

config/environments/development.rb

@@ -4,7 +4,7 @@
   # Allow server to be hosted on any URL
   config.hosts.clear
   # Allow better_errors to work in online IDE
-  config.web_console.whitelisted_ips = "0.0.0.0/0.0.0.0"
+  config.web_console.allowed_ips = "0.0.0.0/0.0.0.0"
   BetterErrors::Middleware.allow_ip! "0.0.0.0/0.0.0.0"
   # Auto-connect to database when rails console opens
   console do