bug fix: directory permissions are considered during install process
         directory was not cherry picked (forgotten)
Conflicts:

	Installation/Windows/Templates/NSIS.template.in
Merge branch '2.0' of https://github.com/triAGENS/ArangoDB into 2.0
used pluging for assiginig appropiate rights to arango software
bug fix in installation directory for all users
renaming install option for all users