Edit Task form

Conflicts:
	webapp/src/main/java/org/exoplatform/codefest/TasksManagementPortlet/UITasksBoard.java
	webapp/src/main/webapp/groovy/webui/TasksManagementPortlet/UITasksBoard.gtmpl
	webapp/src/main/webapp/javascript/eXo/task/taskManagement.js
show UITaskForm popup