Use Vaadin UI instead of jQuery/Table about myschedule HOT 5 CLOSED

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Experiment Vaadin layout to rework the UI. Vaadin provides a much more user 
friendly UI widgets and it very suitable for web based application purpose. We 
need to explore the following components.

a Tree view of schedulers added into the webapp. each scheduler should have a 
Tab sheet view of its triggers, jobs, and calendars. Each of these tab sheet 
should prevent the data in a Table view.

We also need to explore a custom Vaadin component that can edit a 
java.util.Properties easily.

UI improvement: We need to move the CronTool and Scripting Console out per 
scheduler screen, and it should be top level and usable on any scheduler.

All the new main classes are added with new Vaadin 7 framework.