* Moved signed status constants to array dictionary
* Added getLibSignedStatus & getSignedStatusLocalisedArray methods
* Updated fetch & create methods for signed_status
* Added signed status to status badge
* Updated signed_status module builder field
* Added object context signed status for action trigger
* Added signed status to contract list
* Fixed signed status for contract list
* Added sign, unsign, confirm_sign, confirm_unsign actions. Added sign button.
* Fixed old contract without signed status
* Added contract modify notification
* Added contract signed status update
* Updated EN localizations
* Fixed contract notification administration
* Fixed notification message
* Fixed contract status badge
* Fixed langs
* Fixed langs key
* Fixed duplicate localization