Modify internal password generation to base it off the user's password

Modify internal password generation to base it off the user's password. This is required, for now, for sync to work.

storage/password.go

@@ -61,7 +61,7 @@ const (
 // Error messages.
 const (
 	// initInternalPassword
-	readInternalPasswordErr     = "could not generate internal password: %+v"
+	readInternalPasswordErr     = "could not generate"
 	internalPasswordNumBytesErr = "expected %d bytes for internal password, found %d bytes"
 
 	// getInternalPassword