Fix contour r2014b

Fixes #380 and #379:
- Filled contours
- Correct colormap 

See e.g. ACID(8,9,10,23): https://www.dropbox.com/s/l8mc01in65lfcbd/R2014b_fix_contour.pdf?dl=0 

PS. R2014b only.
ACID(10) has both valleys and peaks and was the reason for the re-ordering algorithm. The comments are trying to explain that, but I can make it clearer by using the peak and valley terminology which gives a better idea than a raising/descending group..