Initialized web prject for ExtJS Training.
Added Movie model, store, and controller.

* Illustrated how Movie model should be defined. 
* Proxy should be defined in Model, this way Store 
gets the ability automatically
* Explained about the Proxy reader's root
* Explained about the extraParams as 0 
* Explained relationship between Store and Model 
* Explained how Controller knows about Store and Model
Incorporate Movies info to a Grid tab.
Added Movie Form to the list page.

* Created movieform panel
* Created Ratings local store for form's combo box
Fixed the selector to focus only on the main form.
Added form buttons with some behaviors.

* Bind Submit button with formBind state. Made it 
enable once the form is valid
* At the moment, form will try to submit to nowhere 
* Changed the error message to display under each 
text field
Replaced form submit with Model save (REST style).

* Parse form value to Form model, then leverage 
its proxy to POST data to APIs
Reload the grid and cleaned up the form, after saved a movie.

* Cleaned up the pom file to load Ext from maven