Some documentation

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>
Update .cabal file

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>
Hook dummy login/logout task handlers

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>
Flatbooklet Snaplet url from db to fb

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>
Run Flatbooklet Handlers at login/logout

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>
Perform logout tasks before actual logout

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>
Refactor Flatbooklet.hs

Signed-off-by: Heikki Salo <heikki.ao.salo@iki.fi>