New client configuration pattern (#937)

* adding in initial config files

* working config files

* updating the client config pattern to default to dev instead of prod

* updating the npm script commands and docs

* Adding a helpful debugging log for the webpack build

* adding in more supporting documentation for running against production

* updating README.md and removing the unneeded ENV var

config/base.json

@@ -0,0 +1,8 @@
+{
+    "proxyApi": "http://localhost:4000",
+    "proxyIdentity": "http://localhost:33656",
+    "proxyEvents": "http://localhost:46273",
+    "proxyNotifications": "http://localhost:61840",
+    "proxyPortal": "http://localhost:52313",
+    "allowedHosts": []
+}