Update field guides to display properly. Correct models on user object.

common/models/User-Identity.js

@@ -7,7 +7,7 @@ module.exports = function(UserIdent) {
 
  UserIdent.observe('before save', function(ctx, next) {
   var userIdent = ctx.currentInstance || ctx.instance;
-  if (userIdent) {
+  if (!userIdent) {
     debug('no user identity instance found');
     return next();
   }

common/models/user.json

@@ -169,10 +169,12 @@
       "default": []
     },
     "completedFieldGuides": {
-      "type": []
+      "type": "array",
+      "default": []
     },
     "uncompletedFieldGuides": {
-      "type": []
+      "type": "array",
+      "default": []
     },
     "currentStreak": {
       "type": "number",