Change pkcs11List from QListWidget to QListView
The pkcs11_lib_list holds the data of the loaded libraries.
For the model a QList "model_data" is used to
hold indexes into QList dirs to allow duplicates,
moves and removes.
On windows it now displays the paths with \ separators.
Always only use forward slash /
Drop all "QDir::separator()" and "nativeSeparator()"
functions. Only use it where filenames are displayed for the user.
