modernize group_add/delete and invitation accepted

templates/user-group_created.json.j2

@@ -102,7 +102,7 @@
 			"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; } return { 'group' : selectByPath($.groups, $.tree, 0)}"
+		        "scriptExpression": "function selectByPath(groups, path, level) { for (var i=0; i < groups.length; i++) {if (groups[i].name === path[level]) {if (level === path.length - 1) return groups[i];return selectByPath(groups[i].subGroups, path, level+1)}} return null; } function f() { return { 'group' : selectByPath($.groups, $.tree, 0)}} f()"
 			}
 		},
 		{

templates/user-group_deleted.json.j2

@@ -103,7 +103,7 @@
             "tree" : "${init.output.result.tree}",
             "groups" : "${look_up_groups.output.body}",
             "evaluatorType" : "javascript",
-			"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; } return { 'group' : selectByPath($.groups, $.tree, 0)}"
+			"expression": "function selectByPath(groups, path, level) { for (var i=0; i < groups.length; i++) {if (groups[i].name === path[level]) {if (level === path.length - 1) return groups[i];return selectByPath(groups[i].subGroups, path, level+1)}} return null; } function f() { return { 'group' : selectByPath($.groups, $.tree, 0)}} f()"
             }
         },
         {