Redmine

Hello
as you know persian (jalali) calendar do not support in redmine and this problem exit about 5 years
http://www.redmine.org/issues/12889
http://www.redmine.org/issues/7711

to solving this we can use full calendar script that support fully jalali date available in this link https://github.com/ImenDabaParsian/fullcalendar
no updates in issue tracker so decide to post a question here and asking for help .
how can i change current calendar to this calendar ?

thank you