modernize group_add/delete and invitation accepted

templates/user-group_created.json.j2

@@ -99,11 +99,11 @@
 			"name": "INLINE_TASK",
 			"taskReferenceName": "extract_group",
 			"type": "INLINE",
-			"evaluatorType" : "javascript",
 			"inputParameters": {
 				"tree" : "${init.output.result.tree}",
 		        "groups" : "${look_up_groups.output.body}",
-		        "scriptExpression": "function selectByPath(groups, path, level) { for (var i=0; i < groups.length; i++) {if (groups[i].name === path[level]) {if (level === path.length - 1) return groups[i];return selectByPath(groups[i].subGroups, path, level+1)}} return null; } function f() { return { 'group' : selectByPath($.groups, $.tree, 0)}} f()"
+		        "expression": "function selectByPath(groups, path, level) { for (var i=0; i < groups.length; i++) {if (groups[i].name === path[level]) {if (level === path.length - 1) return groups[i];return selectByPath(groups[i].subGroups, path, level+1)}} return null; } function f() { return { 'group' : selectByPath($.groups, $.tree, 0)}} f()",
+				"evaluatorType" : "javascript"
 			}
 		},
 		{