ensure to run 'migrate' script before 'server:prod'

package.json

@@ -44,6 +44,7 @@
     "plugin:def": "node bin/generate-plugin-definitions-source.js",
     "prebuild:dev:app": "env-cmd config/env.dev.js npm run plugin:def",
     "prebuild:prod": "npm run plugin:def",
+    "preserver:prod": "npm run migrate",
     "prestart": "npm run build:prod",
     "server:debug": "env-cmd config/env.dev.js node-dev --inspect src/server/app.js",
     "server:dev": "env-cmd config/env.dev.js node-dev --respawn src/server/app.js",