Move state enums to the model code

src/test/apptask-test.js

@@ -7,6 +7,7 @@
 
 var addons = require('../addons.js'),
     appdb = require('../appdb.js'),
+    apps = require('../apps.js'),
     apptask = require('../apptask.js'),
     async = require('async'),
     database = require('../database.js'),
@@ -81,7 +82,7 @@ var ADMIN = {
 var APP = {
     id: 'appid',
     appStoreId: 'appStoreId',
-    installationState: appdb.ISTATE_PENDING_INSTALL,
+    installationState: apps.ISTATE_PENDING_INSTALL,
     runState: null,
     location: 'applocation',
     domain: DOMAIN_0.domain,