#43 Recent file problem releted

[Matteo Boscolo]

This list will always show five names, even when, at the beginning of the world, there are fewer
of them. So that, initial names in this list cannot be trusted.

The same name can appear more than once in this list (see figure), and can refer either to the
same file or to different files located into different directories. No way for the [poor] user to
make the difference.

No check is made to verify whether a listed file does really exist, or not. Besides, to utter
confusion, if you click the name of an inexistent file, PyCAD will anyhow create it brand new
for you.