modify database.yml for heroku.
Merge branch 'development' into heroku
Merge branch 'development' into heroku
Merge branch 'development' into heroku
Merge branch 'development' into heroku
Merge branch 'development' into heroku
Merge branch 'development' into heroku
update version.
Merge branch 'development' into heroku
fix performance bug.
fix fixissue bug.
change ui.