Fixed encryption when running outside an Application

Attempting to use a .cnxml file from an interpreter would crash with an
invalid token message. It was because we always set a key in the
dConnectInfo class, whether one was passed in or not, and setting the
key to None resulted in a default value being assigned, which did not
match the values used to encrypt the password originally.

Author: EdLeafe

dabo/db/connect_info.py

@@ -64,7 +64,9 @@ def __init__(self, connInfo=None, **kwargs):
         # Necessary when using this class outside of a Dabo application. See the docstring
         # for the dabo.application.Application.CryptoKey property for the format needed.
         self._encryption = Encryption()
-        self._encryption.set_key(kwargs.get("crypto_key"))
+        crypto_key = kwargs.get("crypto_key")
+        if crypto_key is not None:
+            self._encryption.set_key(kwargs.get("crypto_key"))
 
         if connInfo:
             self.setConnInfo(connInfo)