README: extend the note about extra dependencies

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Statistics script: Fix configuration loading

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
README: Use screenshots hosted on Github instead of my own server

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Merge branch 'testing' into unstable
Main window: Drop the menu bar and replace it by a smaller application menu

Signed-off-by: Jerome Flesch <jflesch@gmail.com>