[Wien] small bug on w2web

[Shu Miao]

Dear users
I am reporting a small bug on w2web interface. After login, the first page
lists all your sessions. They are shortcuts to your jobs directories on
clusters. I believe many users also use command line through a box window
to do your work. Sometime, you just delete unwanted directories through
the box. Then when you open w2web interface next time, the sessions to
those deleted jobs still there. Of course you can not select them, but
you cannot remove them either since the 'delete session' button is inside
the session. So the session list will become longer and longer.
Anyone knows how to deal with this?

Shu Miao