Track total payments on any donation

cronjob.py

@@ -40,6 +40,7 @@ for donation in donations:
 
         send_thank_you(user, donation.amount, donation.type == DonationType.monthly)
         donation.updated = datetime.now()
+        donation.payments += 1
         db.commit()
     else:
         print("Skipping {}".format(donation))

fosspay/objects.py

@@ -62,6 +62,7 @@ class Donation(Base):
     updated = Column(DateTime, nullable=False)
     comment = Column(String(512))
     active = Column(Boolean)
+    payments = Column(Integer)
 
     def __init__(self, user, type, amount, project=None, comment=None):
         self.user = user
@@ -73,6 +74,7 @@ class Donation(Base):
         self.project = project
         self.comment = comment
         self.active = True
+        self.payments = 1
 
     def __repr__(self):
         return "<Donation {} from {}: ${} ({})>".format(