Main updates: added forms for newitem and newtask

 - Created templates newitem.tpl and newtask.tpl.
 - Edited item.py and task.py
 - Edited planner.py ----> added views for newItem and newTask

Note: The templates do not work yet.
 - event_id needs to be passed to newtask.tpl from the view... not sure yet how the view gets this number.
 - event_id and task_id need to be passed to newitem.tpl from the view... not sure yet how the view obtains these numbers.