refs #107 add twitter authenticate link
refs #108 delete bootstrap.js.coffee
refs #107 modified spec of twitter link
refs #109 add library to add authority of administrator
refs #106 modified brand spec
Merge branch 'develop' of https://github.com/kaekasui/learning_ip into develop
refs #109 add admin page
refs #109 add the admin menu space
refs #109 administrator authority
refs #101 add the feature test to sign out