WelcomePage: replace context panel for session editing
This patch replaces the context panel by extendable list items.
This does not create any visual cluttering on hover and is more
user friendly.
Change-Id: Ib9b283f6972ea7e9ae3dc3155d0c3f1c8fe2e806
Reviewed-by:
Alessandro Portale <alessandro.portale@nokia.com>