Bug fixes & new features
Issue #1619648 by Jibus: Ability to define when the Back to Top button appears
Issue #1688130 by konstantin.komelin, acke: Admin interface improvements.
Issue #1691740 by hgmartini, acke: Detection of administration pages
Issue #1685490 by konstantin.komelin, acke: Add support of Browscap module.
Issue #1632408 by konstantin.komelin, acke: Undefined index: HTTP_ACCEPT.
Issue #1632408 by acke, mfby2k: Fixed Undefined index: HTTP_ACCEPT issue.
Issue #1549124 by acke, ClusterFCK: Fixed Ajax pager multiple render issue.
Issue #1538234 by acke, ClusterFCK: Fixed false positive for prevent mobile on Windows 7 / IE 8.