Fix bug in active, close, archive project
Add active? and closed? method
Merge pull request #204 from kmiyake/iss-118_fix_bug_in_close_project

Fix bug in active, close, archive project
Change process from use row ajax to use backbone
home#indexで作業を開始したとき、作業中のユーザーリストを更新する
Merge pull request #206 from kmiyake/iss-146_reload_working_user_list_on_top_page

Fix reload working user list feature
Fix bug in SQL statement error

PG::GroupingError: ERROR:  column "workloads.start_at" must appear
in the GROUP BY clause or be used in an aggregate function
Merge pull request #209 from kmiyake/hotfix

Fix bug in SQL statement error