somewhere in the middle
need verify
bug need fix

不断调用登录ajax
bug fixed

Session.token不设置，导致$stateChangeStart的条件判断为真，执行$state.go(toState);语句，反过来又触发$stateChangeStart事件，形成死循环。
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Merge remote-tracking branch 'upstream/cerila-general-merge-1108' into cerila-general-merge-1015