beta 1.6

- automatic update system (collaborative work with JerryWham, thanks to
him),
Now, the bottom page update link starts an automatic update process :all
the important files are updated and none of your personnal files are
touched (config/data/pass will be preserved)
Note that a restore button is available in the config page to restore
the previous version of the app.

- a log system: now, all changes and connexions are logged (see the
config page to access to you log file content)

- a home page message: now, you can add a message on your first
snippetvamp page (last snippets)