chmod -x cmdstager_printf.rb
Fix mimikatz error when password is nil

In some cases the password value that comes out of mimikatz results
is `nil`, instead of an empty string. This fixes this so that if
the string is `nil` is falls back to an empty string, resulting in
the call to `gsub` working instead of failing.
Land #2590, gsub nil fix for mimikatz
Add ProcessMaker Open Source Authenticated PHP Code Execution
Land #2588, @wvu-r7's permissions change for cmdstager_printf.rb
Clean processmaker_exec
Land #2591, @bcoles's exploit for ProcessMaker
Add a few more modules to the release
Merge branch 'new-modules' into release