remove old assets
revival 'study-as-chain' commits
refresh assets
add apple-touch-icon image #118
add apple-touch-icon assets
Merge branch 'master' into revival-study-as-chain

Conflicts:
	public/assets/application-11bc2d62c1cf5b17578468dd8713cdb8.js.gz
	public/assets/application-64affee8fc33968eda54be509ff731be.css.gz
	public/assets/application-91b97c6d10576d6fe96ad502117d4f31.css
	public/assets/application-9e52c492490d144ad0af871ba0bf7ed7.css
	public/assets/application-aaae84d294ddecd76ed8c58c63e3ae44.js.gz
Merge pull request #171 from i-d-e-a-t/revival-study-as-chain

Revival study as chain＿φ(￣ー￣ )