colon in C:  is not a problem for restore

the problem when searching using regexp containing ':'  is apparently not present for restore
(using burp 1.3.48 )
improve  logging of running command
Fix  Cancel not working when choosing a config file
Fix problem calling fillBackup from gui

works on windows / 2.7.8
failed on linux / 2.7.5
error was fillBackup called with wrong number of elements...
Remove cmd popups under windows

Using pyinstaller to generate an non console .exe, it whould popup a cmd
for every burp launched...