cleanup middleware pre-ship (mostly lint) (#329)

Fixes #180

URL middleware unused, but retained in expectation that we will need it shortly.
Fixed a bit of lint, mostly by reformatting or commenting out currently unused code.

client/src/middleware/updateURLMiddleware.js

@@ -1,15 +1,21 @@
 // jshint esversion: 6
-import uri from "urijs";
+// import uri from "urijs";
+
+/*
+NOTE: file currently not used, but retained as we expect to reinstate features in this
+area shortly.
+*/
 
 /*
   https://medium.com/@jacobp100/you-arent-using-redux-middleware-enough-94ffe991e6
-  storeInstance => functionToCallWithAnActionThatWillSendItToTheNextMiddleware => actionThatDispatchWasCalledWith => valueToUseAsTheReturnValueOfTheDispatchCall
+  storeInstance
+    => functionToCallWithAnActionThatWillSendItToTheNextMiddleware
+    => actionThatDispatchWasCalledWith
+    => valueToUseAsTheReturnValueOfTheDispatchCall
 */
 
-const updateURLMiddleware = store => {
-  return next => {
-    return action => {
-      const oldState = store.getState();
+const updateURLMiddleware = (/* store */) => next => action => {
+  // const oldState = store.getState();
   const nextAction = next(action);
 
   if (action.type === "url changed") {
@@ -17,7 +23,7 @@ const updateURLMiddleware = store => {
     return nextAction;
   }
 
-      const state = store.getState();
+  // const state = store.getState();
 
   /************************************************************************
       *************************************************************************
@@ -77,7 +83,5 @@ const updateURLMiddleware = store => {
 
   return nextAction;
 };
-  };
-};
 
 export default updateURLMiddleware;