Change required version of Mantis to 1.3.0
Created by: etlam
Please open a new branch for the 1.3.0 version of mantis and a new branch for the Modern UI so that I can merge my changes: https://github.com/muensmedia/Reminder
Created by: etlam
Please open a new branch for the 1.3.0 version of mantis and a new branch for the Modern UI so that I can merge my changes: https://github.com/muensmedia/Reminder