FACES-1953 Develop alloy:accordion component (Removed AccordionTabEvent in favor of simply TabEvent; added null-check to AccordionRenderer.decode() in order to fix statehelper issue; moved LFA.getAccordionEventTabIndex to private LFAI.getAccordionEventTabIndex)
FACES-1901 Develop alloy:tab and alloy:tabView components (Added selectedIndex and tabEventListener attributes)
FACES-1714 Develop Liferay Faces Showcase (Added "Selected Tab" and "Server Events" use-cases for alloy:tabView)