Add an option to suppress the automatic include of main.js

[stephanrauh]

By default, every AngularJS ng-controller tag triggers an include of main.js. This is not always desired, so it should be possible to switch this feature off.

[stephanrauh]

Now you can switch off the feature completely by adding a context parameter to the web.xml:

    <context-param>
        <param-name>AngularFaces.includeMainJS</param-name>
        <param-value>false</param-value>
    </context-param>

Alternatively, you can switch it off on a per-controller basis by adding angularJSFile="none".

[stephanrauh]

done