Registering taxonomy as behavior should be optional

[datakurre]

I'm going to add an option for not adding behavior for a taxonomy with flag in taxonomy_name.cfg.

Any opinion on how should the flag be called?

[taxonomy]
name = foobar
title = Foo Bar
description = Foo and bar
default_language = fi
field_title =
field_description =
write_permission = cmf.ManagePortal

Maybe field = true, because field_-prefixed settings control the behavior? Or register_behavior = true? Or just skip the behavior if field_title is empty?

[vincentfretin]

I'm in favor of register_behavior = true (default to true for backward compatibility)