create event_usership table
let the user and event associated with the event_usership
run rake db:migrate command to create table in database
join event is work now
add test code by EventsController#join method
add time merge for event. #162
fixed conflict.
fixed /delivered_mails route error. #150
add picture upload in content of event
add translation of event's updated
change event usership to event participant. #187
Merge pull request #200 from saberma/saberma-feature/162-time-merge

合并显示事件起始时间. #162
Merge branch 'issue/202-show-the-picture-in-content' of git://github.com/caok/19wu into caok-issue/202-show-the-picture-in-content
Merge branch 'master' of github.com:saberma/19wu
fixed drop file error. #206
Merge pull request #207 from saberma/saberma-bug/206-drop-file

fixed drop file error. #206
add favicon, logo wordmark. close #12
Merge pull request #210 from saberma/saberma-enhancement/12-add-logo

加入 Favicon 和 文字 Logo
show user profile. close #150
Merge pull request #212 from saberma/saberma-feature/150-show-user-profile

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