Update of the vulnerability analysis commands

See merge request !244

Defined real-data as an option
Default values of x ticks-labels has a default
Default size of epsc plot reverted
Duplicate hist docstring removed
PAD criteria for evaluate removed

bob vuln gen also wont generate them.

Possibility to set the fetch_references attribute.

`load` returns a dict to differentiate each score class

Score checkpoint are more robust

See merge request !245