[ui] Bug 441766: Support using Plug-ins own Wizards/ Popup Dialogs

Change-Id: If9b6caad5ff1200fc96b0decd5b770cefc8bd64e
Signed-off-by: Yasser Aziza <yasser.aziza@gmail.com>
Signed-off-by: Andreas Sewe <andreas.sewe@codetrails.com>