added convenience function for nsenter (dockerenter)
Merge branch 'master' of github.com:mdulghier/dotfiles

* 'master' of github.com:mdulghier/dotfiles:
  add kde config backup script and initial set of config files
  fixed some issues in setup.sh, some cleanup
  lots of additions to setup.sh
  add compizconfig to setup.sh
  add synapse to installs
added keepass2, meld and Citrix Receiver to setup.sh