Add oxygen-gtk3 and rename oxygen_gtk to oxygen-gtk2.

oxygen_gtk is still kept for backwards compatibility.
kde4: added the security patch for CVE-2014-5033 to nixpkgs because it is not available upstream
nodePackages: add support for recursive dependencies

This is a drop-in replacement that handles nodejs recursive dependencies by
propagating already visited nodejs packages and creating shims for recursive
ones. This implementation handles both, new and old npm2nix output format.
Merge pull request #4010 from madjar/master

kde4: added the security patch for CVE-2014-5033 to nixpkgs because it is not available upstream
Support users-groups.json referring to store paths

Fixes #4016.
pythonPackages: add dotfiles, dotfile manager
gecode: add package
pythonPackages.gcutil: fix build
pythonPackages.livestream: use requests2
nixos-rebuild: Don't pass -K by default
Manual: Fix build product
Remove some obsolete platform override in release.nix
gecode: meta information
rbtools: 0.4.1 -> 0.6.1
sshpass: Added expression
gecode: fix meta
Merge pull request #4026 from manveru/gecode

gecode: add package
fix a bunch of packages with lua5_1
Elixir is now 1.0.0!

Closes #4027
pythonPackages: add graphite_api and its dependencies