* Moved signed status properties & methods to reusable class trait
* Cleaned code
* Updated EN localization
* Fixed Phan warnings
* Fixed Phan warnings
* Added type check. Updated PHPDoc.
* Refactored class properties
* Cleaned PHPDoc
* Revert "Refactored class properties"
This reverts commit 1beb40a7
* Reapply "Refactored class properties"
This reverts commit 9e3d9d554c.
* Fixed PHPDoc
* Fixed class file name
