Add load and display progress bars

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Menu structure and some cosmetic changes

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Added plots scaling

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>