Multiple changes/fixes

- switch to saltstack/ubuntu-13.10 for docker image
- install python scipy, numpy, matplotlib to be used in PyCall/PyPlot
- corrected and used base.css directly instead of the less file as it was probably causing some slowdown
- tweaked front page
- added python-dev to setup script
Merge pull request #13 from tanmaykm/tanmaykm

Multiple changes/fixes