[Airoscript-ng] Added automatic dependency system for plugins, auto-enabled tmux and digenpy with john and mdk3 (if the binaries are not present, it simply won't load them

git-svn-id: http://svn.aircrack-ng.org/branch/airoscript-ng@2369 28c6078b-6c39-48e3-add9-af49d547ecab