Question 1
Alright, figured it out now... it's actually pretty easy!
composer.json
"zf-commons/zfc-user-doctrine-orm": "dev-master"
Run
php composer.phar update
Add app under application.config
'ZfcUserDoctrineORM'
Run Doctrine CLI
doctrine-module orm:schema-tool:update --force
Question 2
Here are the options for checking the login state.