refs #36 add the relationship of ticket
Merge branch 'develop' of https://github.com/kaekasui/room into develop
Merge branch 'develop'
refs #36 fix foreign key
Merge branch 'develop'
refs #38 sort of blogs by posted_at
Merge branch 'master' into develop
refs #38 modified blog spec, created_at -> posted_at
refs #3 required of blogs
refs #3 add link of admin blog title
refs #40 'rails generate migration AddReleaseAtToVersions release_at:timestamp'
refs #40 display release time on the footer