update changelog
fix syntax error introduced by PR #945
Fix postage amount on backoffice home page
	modified:         core/lib/Thelia/Model/OrderQuery.php
[BO] add parameter backend_context="on" on product loop in categories page
prepare version 2.1.0-beta1
update composer.lock
Merge pull request #957 from lunika/changelog

Prepare version 2.1.0-beta1