Add holiday setting to gp_calendar
Add qreki to gp_calendar
Add default holiday
Add create holidays data
Add qreki helper
Merge branch 'master' into work
Merge branch 'master' into work
Merge branch 'master' into work
Remove sample
Merge branch 'master' into work
Change qreki & holiday
Merge branch 'master' of https://github.com/zomeki/zomeki-development