coverity#1213488 Uncaught exception

Change-Id: Iee4e5dd2936979a9bcb8bd5db781e51551270a7f
coverity#1213486 Uncaught exception

Change-Id: Ia4d919d88bf22168aa770ad35fd8360b0b155efe
convert extensions update required dialog to .ui

Change-Id: Ia3ad4032f500e95db5db520292e6c8b07b0f5c0b