fix make usernames required

common/models/user.json

@@ -44,7 +44,8 @@
     "username": {
       "type": "string",
       "lowercase": true,
-      "trim": true
+      "trim": true,
+      "id": true
     },
     "bio": {
       "type": "string",
@@ -226,7 +227,18 @@
     }
   },
   "validations": [],
-  "relations": {},
+  "relations": {
+    "credentials": {
+      "type": "hasMany",
+      "model": "userCredential",
+      "foreignKey": ""
+    },
+    "identities": {
+      "type": "hasMany",
+      "model": "userIdentity",
+      "foreignKey": ""
+    }
+  },
   "acls": [
     {
       "accessType": "*",

server/config.json

@@ -2,7 +2,7 @@
   "restApiRoot": "/api",
   "host": "0.0.0.0",
   "port": 3000,
-  "legacyExplorer" : false,
+  "legacyExplorer": false,
   "remoting": {
     "context": {
       "enableHttpContext": false