feat(postcard): split create into sent/received, add pending status and mark-sent flow

app/locales/en.json

@@ -73,17 +73,23 @@
   "profiles.confirm_delete": "Delete this profile?",
   "pc_list.title": "'s postcards",
   "pc_list.new": "+ New postcard",
+  "pc_list.new_sent": "✉️ Sent",
+  "pc_list.new_received": "📬 Received",
   "pc_list.duplicate": "Card number already exists",
   "pc_list.all_countries": "All countries",
   "pc_list.filter": "Filter",
   "pc_list.tab_sent": "Sent",
   "pc_list.tab_received": "Received",
+  "pc_list.mark_sent": "Send",
+  "pc_list.confirm_sent": "Mark as sent?",
   "pc_list.mark_delivered": "Delivered",
   "pc_list.confirm_delivered": "Mark as delivered?",
   "pc_list.empty_sent": "No sent postcards.",
   "pc_list.empty_received": "No received postcards.",
   "pc_detail.title": "Postcard detail",
   "pc_detail.edit": "Edit",
+  "pc_detail.mark_sent": "Send",
+  "pc_detail.confirm_sent": "Mark as sent?",
   "pc_detail.mark_delivered": "Mark delivered",
   "pc_detail.confirm_delivered": "Mark as delivered?",
   "pc_detail.delete": "Delete",
@@ -106,10 +112,13 @@
   "pc_detail.profile": "Profile",
   "pc_detail.notes": "Notes",
   "status.sent": "Sent",
+  "status.pending": "Pending",
   "status.delivered": "Delivered",
   "status.received": "Received",
   "pc_form.edit": "Edit postcard",
   "pc_form.new": "New postcard",
+  "pc_form.new_sent": "New sent",
+  "pc_form.new_received": "New received",
   "pc_form.number": "Number",
   "pc_form.number_hint": "Format: AB-1234567",
   "pc_form.status": "Status",