Settings + 2.4 BC break

[ThaDafinser]

Badly my last PR contained an issue (my logging didnt worked correctly...):

WARNING RerUserDates[2015-02-04 15:45:07] [2471e] D:\htdocs\piwik\core\Plugin\Settings.php(95): Warning - array_key_exists(): The first argument should be either a string or an integer - Piwik 2.10.0 - Please report this message in the Piwik forums: http://forum.piwik.org (please do a search first as it might have been reported already)

Additionally i removed the 2.4 BC compability like ref in #7

[tassoman]

Thank you for this correction. It make me wonder if we need more tests 😁

[ThaDafinser]

Yes...was my fault... 👍

My plan is also to integrate some unitTests in my pluings: https://developer.piwik.org/guides/tests-php

[tassoman]

Yup, mine plan too! I've just opened #9 ✔️