Finish up embed modal feature (#4759)

* Add embed button to dropdowns of in-timeline statuses

* yarn run manage:translations

app/javascript/mastodon/locales/defaultMessages.json

@@ -197,6 +197,10 @@
       {
         "defaultMessage": "Unpin from profile",
         "id": "status.unpin"
+      },
+      {
+        "defaultMessage": "Embed",
+        "id": "status.embed"
       }
     ],
     "path": "app/javascript/mastodon/components/status_action_bar.json"
@@ -1051,6 +1055,10 @@
       {
         "defaultMessage": "Unpin from profile",
         "id": "status.unpin"
+      },
+      {
+        "defaultMessage": "Embed",
+        "id": "status.embed"
       }
     ],
     "path": "app/javascript/mastodon/features/status/components/action_bar.json"
@@ -1124,6 +1132,23 @@
     ],
     "path": "app/javascript/mastodon/features/ui/components/confirmation_modal.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Embed",
+        "id": "status.embed"
+      },
+      {
+        "defaultMessage": "Embed this status on your website by copying the code below.",
+        "id": "embed.instructions"
+      },
+      {
+        "defaultMessage": "Here is what it will look like:",
+        "id": "embed.preview"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/ui/components/embed_modal.json"
+  },
   {
     "descriptors": [
       {