Dandelion fixes

- in route selector, some connections may not have the services
attribute (yet)
- Addresses #1049

src/network/connectionpool.py

@@ -61,10 +61,13 @@ class BMConnectionPool(object):
         for i in connections:
             if i == node:
                 continue
+            try:
                 if i.services | protocol.NODE_DANDELION:
                     peers.append(i)
                     if len(peers) == 2:
                         break
+            except AttributeError:
+                continue
         return peers
 
     def connectToStream(self, streamNumber):