ADD: tables of user system
MOD: service 'NavCtrl'

handle condition that no projectId exists
ADD: login page && auth controller
ADD: login auth
MOD: default session to database session
MOD: handle invalid session
ADD: token auth for api request
ADD: token auth for controller test
ADD: api/controller && test for user authority
MOD: userRole controller
FIX: user logical && authFIlter
MOD: make passport auth configurable
MOD: igore authFilter for api request
ADD: 'private' field of table 'dashboards'
MOD: dashboard edit modal

ADD checkbox for ‘private’ field of table ’dashboards’
ADD: token module
Merge pull request #91 from slycloud/master

ADD: user authority