Add scrollfix for iOS

material/assets/javascripts/application-2442e71194.js

material/base.html

material/partials/nav-item.html

material/partials/nav.html

material/partials/search.html

material/partials/toc.html

src/assets/javascripts/application.js

src/partials/nav-item.html

src/partials/nav.html

src/partials/search.html

src/partials/toc.html