Disable Click Tracking not working

[thinkingserious]

Issue Summary

See #287

[jllorencetti]

@thinkingserious it seen to be solved already.

The current output is this:
ClickTracking() -> {'click_tracking': {}}
ClickTracking(False) -> {'click_tracking': {'enable': False}}
ClickTracking(True) -> {'click_tracking': {'enable': True}}

Do you think it's worth to make a PR with a test to prevent a regression?

[thinkingserious]

Yes, that would be great. Thanks!

[jllorencetti]

@thinkingserious ok, I'll do it. :)