kivy: use scrollview for invoice dialog

gui/kivy/uix/ui_screens/invoice.kv

@@ -14,11 +14,18 @@ Popup:
     title: _('Invoice') if popup.is_invoice else _('Request')
     BoxLayout:
         orientation: 'vertical'
-        GridLayout:
-            spacing: '10dp'
         padding: '10dp'
+        ScrollView:
+            GridLayout:
+                cols: 1
                 height: self.minimum_height
+                size_hint_y: None
+                GridLayout:
                     cols: 2
+                    size_hint_y: None
+                    height: self.minimum_height
+                    spacing: '10dp'
+                    padding: '10dp'
                     TopLabel:
                         text: _('Requestor') if popup.is_invoice else _('Address')
                     TopLabel:
@@ -44,10 +51,13 @@ Popup:
                     TopLabel:
                         text: root.status
 
+                TopLabel:
+                    text: _('Outputs') if popup.is_invoice else ''
                 OutputList:
                     id: output_list
                 TopLabel:
                     id: txid_label
+
         Widget:
             size_hint: 1, 0.1
 

lib/paymentrequest.py

@@ -207,7 +207,8 @@ class PaymentRequest:
             'exp': self.get_expiration_date(),
             'amount': self.get_amount(),
             'signature': self.get_verify_status(),
-            'txid': self.tx
+            'txid': self.tx,
+            'outputs': self.get_outputs()
         }
 
     def get_id(self):