More members overhaul

Relates to #44

members/models.py

@@ -30,8 +30,12 @@ class Payment(models.Model):
     '''
     Payment model representing one payment event
     '''
-    date = models.DateTimeField(default=datetime.fromtimestamp(0))
-    source = models.CharField(max_length=255)
+    date = models.DateTimeField(default=datetime.now())
+    source = models.CharField(choices=[
+        ('AYY', _('AYY')),
+        ('cash', _('Cash')),
+        ('bank_transfer', _('Bank transfer')),
+    ], max_length=255)
 
     member = models.ForeignKey('Member', on_delete=models.SET_NULL, blank=True, null=True)
 
@@ -41,4 +45,6 @@ class Member(BaseMember):
     Member model represets one member on the registry.
     '''
     created = models.DateTimeField(default=timezone.now)
-    paid = models.DateTimeField(default=timezone.now) #this needs to be assigned as Payment.date
+
+    def __str__(self):
+        return "{} {}, {}".format(self.last_name, self.first_name, self.email)