Add DQN Test and Change file structure (#146)

* Initial commit

* first commit

* add build

* add build

* add build

* add recommend

* add crosswoz config in deploy

* add crosswoz at html

* debug chinese vision

* fix system bug according to convlab2

* master change

* modify .gitignore

* delete svm_camrest_usr.pickle

* Update server.py

* add test for DQN

* change server

Co-authored-by: Carrey Wang <cwhongru@cuc.edu.cn>
Co-authored-by: kflab_2018 <kflab_2018@kflab-2018s-MacBook-Air.local>
Co-authored-by: CarreyWong <carreywong@CarreyWongs-MacBook-Pro.local>
Co-authored-by: zimozhou <47972969+zimozhou@users.noreply.github.com>
Co-authored-by: MR. WANG <hrwang@kfsrv03.se.cuhk.edu.hk>