webserver class add.
Creating a class of judge server and web server share class.
tmp files delete
create a file of credential - node-config.json
Deleting to tmp file and tmp folder
add /db/node_module -> mysql and sequelize
socket.ioからsession storeへのアクセスがうまくいっていない
Merge remote-tracking branch 'origin/master'

Conflicts:
	judgeServer/judgeServer.coffee
	judgeServer/judgeServer.js