Add task fields

New task fields added. estimatedEffort, actualEffort, due date with Jcalendar. 
The jspinner on the ui takes a model that is used to prevent iliigal input
On Nov 18, 2014 4:52 PM, "Khazhismel Kumykov" <notifications@github.com>
wrote:

> In
> TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/model/Task.java:
>
> > @@ -49,11 +53,27 @@ public static Task fromJson(String json) {
> >  	/** The description of the task */
> >  	private String description = "";
> >  	
> > +
> > +	/** field for the estimated effort. This field must be non-zero and non negative **/
>
> This comment should be addressed before merging :)
>
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> <https://github.com/JustDuckItAll/wpi-suite/pull/18/files#r20541313>.
>