remove support for manifest version 1

this is long untested by now

src/test/common.js

@@ -2,7 +2,6 @@
 
 const apps = require('../apps.js'),
     async = require('async'),
-    blobs = require('../blobs.js'),
     constants = require('../constants.js'),
     database = require('../database.js'),
     delay = require('delay'),
@@ -26,7 +25,7 @@ const manifest = {
     'website': 'http://test.cloudron.io',
     'contactEmail': 'test@cloudron.io',
     'version': '0.1.0',
-    'manifestVersion': 1,
+    'manifestVersion': 2,
     'dockerImage': 'cloudron/test:25.2.0',
     'healthCheckPath': '/',
     'httpPort': 7777,