用get_object_or_404替換掉判斷對象不存在的邏輯
增加找回密碼功能的test
HttpResponseRedirect -> redirect
add pytest-random
pep8
HttpResponseRedirect -> redirect
把event_list改為Class View，並加入unittest
755 -> 644
把topic_list重構為class view
add slack service
把Client改為self.client
Merge pull request #52 from qingfeng/refactory

一些小的重構