Patch for PHP7

Following a message on sourceforge forum, a patch to make Kados R10-GreenBee compliant with PHP7 has been published : https://sourceforge.net/projects/kados/files/kados_r10-GreenBee_PHP7-Patch.zip/download.
Just deploy it on the Kados R10-GreenBee folder and update database with the script in the sql/ folder
It should fix a bug linked to dates management in MySQL 5.7
If a problem persist use the forum : https://sourceforge.net/p/kados/discussion/Global/thread/96b85be0/