Language code on home page

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When using Language Domains together with the Joomlatools Framework, the fix in PR #7 doesn't help.

The language code is added for all languages like:
http://www.site.no/no/
http://www.site.fi/fi/

Test done:
I've created a fresh multilingual Joomla 3.7.4, with default demo data only. Installed and tested the latest Language Domains successfully, hiding the language code.

Then I installed LOGman from Joomlatools, which also includes the Joomlatools Framework, and after that the language code got back.

Also tested changing the ordering of plugins, but no luck ...