Refactored search language handling

docs/customization.md

docs/getting-started.md

material/assets/javascripts/application.5f9a6f1b.js

material/base.html

material/partials/language.html

material/partials/language/da.html

material/partials/language/de.html

material/partials/language/en.html

material/partials/language/es.html

material/partials/language/fr.html

material/partials/language/it.html

material/partials/language/ja.html

material/partials/language/kr.html

material/partials/language/nl.html

material/partials/language/no.html

material/partials/language/pt.html

material/partials/language/ru.html

material/partials/language/sv.html

material/partials/language/tr.html

material/partials/language/zh-Hant.html