Add product keyword to EL so product information can be obtained in facelet views

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: util-1.0.0, util-2.0.0, util-3.0.0
• Fix Version/s: alloy-2.0.0, alloy-3.0.0, portal-3.0.0, util-1.0.0, util-2.0.0, util-3.0.0, bridge-impl-2.0.0, bridge-impl-3.0.0, bridge-impl-4.0.0, bridge-impl-5.0.0, bridge-impl-6.0.0
• Component/s: Liferay Faces Alloy / Showcase / Tests, Liferay Faces Bridge Impl / Demos / Tests, Liferay Faces Portal / Demos / Tests, Liferay Faces Util
• Labels: None

{markdown}
This task involves adding a `product` keyword to EL so that [Product](https://github.com/liferay/liferay-faces-util/blob/master/src/main/java/com/liferay/faces/util/product/Product.java) information can be obtained in facelet views. As an example of how to do this, see [UtilELResolver](https://github.com/liferay/liferay-faces-util/blob/master/src/main/java/com/liferay/faces/util/el/internal/UtilELResolver.java) and [I18nMap](https://github.com/liferay/liferay-faces-util/blob/master/src/main/java/com/liferay/faces/util/el/internal/I18nMap.java).{markdown}