[printrun/f21] (6 commits) ...Source for 2014.08.01

[Miro Hrončok]

Summary of changes:

  2cf6372... Do not longer depend on skeinforge, as it appears nobody us (*)
  ea8c7bd... Clean the spec a little (*)
  5b7f228... pronterface and plater require python-psutil and numpy (#11 (*)
  eab7a00... Update to 2014.08.01 (*)
  b97629a... the slicer command is now in different file (*)
  a2c0af4... Source for 2014.08.01 (*)

(*) This commit already existed in another branch; no separate mail sent