Finish up embed modal feature (#4759)

* Add embed button to dropdowns of in-timeline statuses

* yarn run manage:translations

app/javascript/mastodon/locales/ko.json

@@ -63,6 +63,8 @@
   "confirmations.mute.message": "정말로 {name}를 뮤트하시겠습니까?",
   "confirmations.unfollow.confirm": "Unfollow",
   "confirmations.unfollow.message": "Are you sure you want to unfollow {name}?",
+  "embed.instructions": "Embed this status on your website by copying the code below.",
+  "embed.preview": "Here is what it will look like:",
   "emoji_button.activity": "활동",
   "emoji_button.flags": "국기",
   "emoji_button.food": "음식",
@@ -162,6 +164,7 @@
   "standalone.public_title": "A look inside...",
   "status.cannot_reblog": "이 포스트는 부스트 할 수 없습니다",
   "status.delete": "삭제",
+  "status.embed": "Embed",
   "status.favourite": "즐겨찾기",
   "status.load_more": "더 보기",
   "status.media_hidden": "미디어 숨겨짐",