update README
update html
add confirm file
Merge branch 'master' of https://github.com/50river/ibaraki-town-5374 into 50river-master
Merge branch 'master' into gh-pages
茨城町版の休止期間計算不具合修正
Merge branch 'master' into gh-pages
Merge commit '8c67ebc056d9e5b4edc8fab2386db988db9c66bb' into pullreq
必要のない部分を削除