style(*): wrap all assignments in if statements

we commonly assign stuff in if statments like this:

if (variable = someFn()) {
  //do something with variable
}

This results in lint and IDE warnings (did you mean ==?).

It is better to be explicit about our intention and wrap the assignement
into parens:

if ((variable = someFn())) {
  //do something with variable
}

Doing so suppresses warnings + is easier to understand the intention.

I verified that the closure compiler strips the extra parens, so there
is no byte overhead for this safety practice.

We should use this style going forward...

src/service/route.js

@@ -216,7 +216,7 @@ angularServiceInject('$route', function($location) {
     // Match a route
     forEach(routes, function(rParams, rPath) {
       if (!pathParams) {
-        if (pathParams = matcher($location.hashPath, rPath)) {
+        if ((pathParams = matcher($location.hashPath, rPath))) {
           selectedRoute = rParams;
         }
       }

src/service/xhr.cache.js

@@ -52,7 +52,7 @@ angularServiceInject('$xhr.cache', function($xhr, $defer, $error, $log) {
 
     if (method == 'GET') {
       var data, dataCached;
-      if (dataCached = cache.data[url]) {
+      if ((dataCached = cache.data[url])) {
 
         if (sync) {
           success(200, copy(dataCached.value));
@@ -64,7 +64,7 @@ angularServiceInject('$xhr.cache', function($xhr, $defer, $error, $log) {
           return;
       }
 
-      if (data = inflight[url]) {
+      if ((data = inflight[url])) {
         data.successes.push(success);
         data.errors.push(error);
       } else {