Fixed issues with MODULE_ROOT constant.
Merge branch '4.1-devel' of https://github.com/bigtreecms/BigTree-CMS into 4.1-devel
Removed opting and jpegtran support. They were at best trivial, at worst security risks calling exec.

Fixed issues with OAuth APIs and the Storage API having multiple instances screwing with the data on destruct using new autoSaveSetting method in BigTreeCMS.