fix(oauth): Facebook API updated

Facebook removed most default info. Must now explicitly ask for email.
They also do not send usernames anymore.

app/templates/server/auth(auth)/facebook(facebookAuth)/passport.js

@@ -5,7 +5,11 @@ exports.setup = function(User, config) {
   passport.use(new FacebookStrategy({
     clientID: config.facebook.clientID,
     clientSecret: config.facebook.clientSecret,
-    callbackURL: config.facebook.callbackURL
+    callbackURL: config.facebook.callbackURL,
+    profileFields: [
+      'displayName',
+      'emails'
+    ]
   },
   function(accessToken, refreshToken, profile, done) {
     <% if (filters.mongooseModels) { %>User.findOneAsync({<% }
@@ -19,7 +23,6 @@ exports.setup = function(User, config) {
             name: profile.displayName,
             email: profile.emails[0].value,
             role: 'user',
-            username: profile.username,
             provider: 'facebook',
             facebook: profile._json
           });