Switched appengine_config to use site.addsitedir()
Switched appengine_config to use site.addsitedir()

Replacing sys.path.insert() with site.addsitedir() makes it possible to import namespace package dependencies.
prakma/hmp-web,prakma/hmp-web,GoogleCloudPlatform/appengine-bottle-skeleton,gitprouser/appengine-bottle-skeleton,prakma/hmp-web,gitprouser/appengine-bottle-skeleton