Fix bug in case base Save and Save As functionality and default the Save and Open dir to BWAPI Client output dir

Signed-off-by: MHesham <mhesham.fcis@gmail.com>
Add functionality of Reload Case Base from current loaded case file and Duplicate selected case
Fix bug in DeleteCase as well

Signed-off-by: MHesham <mhesham.fcis@gmail.com>