Rewrite component to change user/group role

assets/js/src/ProjectPermission.js

@@ -1,19 +0,0 @@
-Kanboard.ProjectPermission = function(app) {
-    this.app = app;
-};
-
-Kanboard.ProjectPermission.prototype.listen = function() {
-    $('.project-change-role').on('change', function () {
-        $.ajax({
-            cache: false,
-            url: $(this).data('url'),
-            contentType: "application/json",
-            type: "POST",
-            processData: false,
-            data: JSON.stringify({
-                "id": $(this).data('id'),
-                "role": $(this).val()
-            })
-        });
-    });
-};