use (LMP)loopback middleware phases

bump loopback-component-passport which uses LMP
move custom middlewares to middlewares directory

server/middlewares/add-return-to.js

@@ -0,0 +1,13 @@
+export default function addReturnToUrl() {
+  return function(req, res, next) {
+    // Remember original destination before login.
+    var path = req.path.split('/')[1];
+    if (/auth|login|logout|signin|signup|fonts|favicon/i.test(path)) {
+      return next();
+    } else if (/\/stories\/\w+/i.test(req.path)) {
+      return next();
+    }
+    req.session.returnTo = req.path;
+    next();
+  };
+}