BF: allow loops to be deleted from Flow even if the conditions file not found
BF: interleaved stairs had several bugs - wasn't working at all!
Merge branch 'master' of github.com:psychopy/psychopy
ENH: first pass preview of eye-tracker component
FF: the ExperimentSettings dlg was broken by new pos default. Fixes #371
ENH: Moved ExperimentSettings to more useful position (higher on screen)
Merge pull request #370 from jeremygray/master

ENH: ensure some visible space between log elements
FF: BufferImageStim

partial fix, needs work still.
- this improves things visually but it seems odd, not sure why it works:
  self.thisScale = numpy.array([4, 4])
- text is a pixelated around the edges in a BufferImage;
  to see run coder demo > stimuli > bufferImageStim.py
- non-fullscreen-capture is not right