fix: Groups should only be locked when the start date of the project …

…is AFTER the current date

frontend/src/types/Project.ts

@@ -91,7 +91,7 @@ export class Project {
      * @returns True if the project is locked, false otherwise.
      */
     public isLocked(): boolean {
-        return !this.visible || this.archived || this.locked_groups || moment(this.start_date).isBefore();
+        return !this.visible || this.archived || this.locked_groups || moment(this.start_date).isAfter();
     }
 
     /**