Add keyboard shortcut to scroll current item to the top

locale/translations.go

locale/translations/de_DE.json

locale/translations/en_US.json

locale/translations/es_ES.json

locale/translations/fr_FR.json

locale/translations/it_IT.json

locale/translations/ja_JP.json

locale/translations/nl_NL.json

locale/translations/pl_PL.json

locale/translations/pt_BR.json

locale/translations/ru_RU.json

locale/translations/zh_CN.json

template/common.go

template/html/common/layout.html

ui/static/js.go

ui/static/js/app.js

ui/static/js/bootstrap.js

ui/static/js/dom_helper.js