refactor IS_APP_ENGINE to IS_APPENGINE

Signed-off-by: Kien Luu <kienluu@kien56.local>
remove debug code

Signed-off-by: Kien Luu <kienluu@kien56.local>
use blobstorage app

Signed-off-by: Kien Luu <kienluu@kien56.local>
removed print statement

Signed-off-by: Kien Luu <kienluu@kien56.local>
show group description

Signed-off-by: Kien Luu <kienluu@kien56.local>