FACES-1947 - Please consider these components for inclusion in the showcase.
FACES-1947 Develop alloy:selectManyMenu, alloy:selectManyListbox, and alloy:selectManyCheckbox component tags
FACES-1714 Develop Liferay Faces Showcase (added use-cases for alloy:selectManyMenu, alloy:selectManyListbox, and alloy:selectManyCheckbox)