v4.4.0

CHANGELOG

• Required minimal version of PHP is 5.5 now.
• ENVIRONMENT is 'production' by default.
• A new constant PRODUCT_VERSION has been added to identify your final product, see platform/bootstrap/versions.php
• www/ --> public/
• Some minor corrections have been done on KCFinder.
• The bootstrapping code has been refactored sligntly.
• Identified obsolete code has been removed.

Upgrade carefully!