shorten for mysql

linkdrop/model/account.py

@@ -14,11 +14,11 @@ class Account(JsonExpandoMixin, SerializerMixin, Base):
 
     id = Column(Integer, primary_key=True)
 
-    key = Column(RDUnicode(128), index=True)
+    key = Column(RDUnicode(64), index=True)
     # The external account identity information
-    domain = Column(RDUnicode(128), nullable=False)
-    username = Column(RDUnicode(128), nullable=False)
-    userid = Column(RDUnicode(128), nullable=False)
+    domain = Column(RDUnicode(64), nullable=False)
+    username = Column(RDUnicode(64), nullable=False)
+    userid = Column(RDUnicode(64), nullable=False)
 
     def __init__(self):
         # can be overridden later, but always have a default for new accounts