FACES-1894 Add back missing aui:findClientId EL function that was accidentally removed in commit 4ae97ed2dbca946f6b49e030fc67a1a25fbc2988
FACES-1513 Portlet incompatibility with PrimeFaces p:dataExporter and p:fileDownload (also added p:dataExporter to primefaces demo portlets for testing)
FACES-2025 Add MessageContextFactory and refactor MessageContext implementations to take advantage of factory discovery (fixed xml typo)
FACES-2017 NullPointerException thrown by PreviewTableTemplate on startup (removed unused code)
FACES-2018 Develop new PostConstructApplicationConfigEvent (removed unused code)