Merge pull request #5720 from josephlacey/datatables-update

Datatables update

diff --cc CRM/Activity/Page/AJAX.php
Simple merge

diff --cc CRM/Contact/BAO/Relationship.php
Simple merge

diff --cc CRM/Contact/Page/AJAX.php
Simple merge

diff --cc CRM/Core/Resources.php
Simple merge

diff --cc CRM/Mailing/BAO/Mailing.php
Simple merge

diff --cc css/civicrm.css
Simple merge

diff --cc js/Common.js
Simple merge

diff --cc templates/CRM/common/l10n.js.tpl
Simple merge