The console DB cleanup chore has been extended to remove expired webapp
session records.
Resolves#5893
Change-Id: I455b4933552cfde86817a2ef8f9879dd7b0a121d
Sessions now expire after a much shorter amount of time, requiring
clients to issue API requests for session extension. This is handled
behind the scenes as the user interacts with the page, but once session
expiration is imminent, a modal appears which informs the user of his
inactivity and presents him with the choice of loging out or preserving
his session.
Change-Id: I68008d45859c814a835d65d882ad5ad2199d618e
