Further cleaning and improvements

admin/server/models/system.js

@@ -11,7 +11,6 @@ var systemSchema = mongoose.Schema({
   state: String,
   description: String,
   showScreenName: Boolean,
-  planType: {type: Number, default: 0},
   userId:  mongoose.Schema.Types.ObjectId,
   key: String
 });

admin/server/models/user.js

@@ -32,10 +32,6 @@ const UserSchema = new mongoose.Schema({
 		type: Boolean,
 		default: false
 	},
-	customerId: {
-		type: String,
-		default: ""
-	},
 	confirmEmailToken: String,
 	confirmEmailTTL: Date,
 	admin: {