Make "view" action work for reblogged statuses

When the status is a reblog, the URL of the original toot should be used
as the one of reblog is null.

We add a "url" attribute to Status class storing computed URL.

toot/tui/entities.py

@@ -31,6 +31,9 @@ def __init__(self, data, is_mine, default_instance):
         self.reblogged = data.get("reblogged", False)
         self.in_reply_to = data.get("in_reply_to_id")
 
+        reblog = data.get("reblog")
+        self.url = reblog.get("url") if reblog else data.get("url")
+
     def get_author(self):
         # Show the author, not the persopn who reblogged
         data = self.data["reblog"] or self.data

toot/tui/timeline.py

@@ -149,8 +149,8 @@ def keypress(self, size, key):
             return
 
         if key in ("v", "V"):
-            if status.data["url"]:
-                webbrowser.open(status.data["url"])
+            if status.url:
+                webbrowser.open(status.url)
             return
 
         return super().keypress(size, key)