use browser extension to open tab in background (#1074)

commafeed-client/src/locales/ko/messages.po

@@ -127,9 +127,13 @@ msgstr "뒤로"
 msgid "Back to log in"
 msgstr "로그인으로 돌아가기"
 
+#: src/components/KeyboardShortcutsHelp.tsx
+msgid "Browser extension required"
+msgstr ""
+
 #: src/pages/app/AboutPage.tsx
-msgid "Browser extentions"
-msgstr "브라우저 확장"
+msgid "Browser extention"
+msgstr ""
 
 #: src/components/admin/UserEdit.tsx
 #: src/components/content/add/AddCategory.tsx
@@ -163,13 +167,21 @@ msgstr "비밀번호를 변경하면 새 API 키가 생성됩니다."
 msgid "Check that the feed is working"
 msgstr "피드가 작동하는지 확인"
 
+#: src/pages/app/AboutPage.tsx
+msgid "CommaFeed browser extension <0>not installed</0> (or URL in extension options not matching this CommaFeed instance)."
+msgstr ""
+
+#: src/pages/app/AboutPage.tsx
+msgid "CommaFeed browser extension version {browserExtensionVersion}."
+msgstr ""
+
 #: src/pages/app/AboutPage.tsx
 msgid "CommaFeed next unread item"
 msgstr "다음 읽지 않은 항목을 쉼표로 피드"
 
 #: src/pages/app/AboutPage.tsx
-msgid "CommaFeed version {version} ({revision})"
-msgstr "쉼표 피드 버전 {버전}({개정})"
+msgid "CommaFeed version {version} ({revision})."
+msgstr ""
 
 #: src/components/header/ProfileMenu.tsx
 msgid "Compact"