Plots for HierarchicalNetwork characterisation
DataIO looks for WORKDIR_DROP for Git

- Fix: changed so that Git infos are looked in the "usual" working directory. Safer.
Plots and fixes, Smooth

- Fix: Show datapoint now uses coloured circles, just like the posterior plotting
- Added: Smooth function, taken from http://www.scipy.org/Cookbook/SignalSmooth
- Added: Pcolor_2d_data now refreshes data instead of replotting. Handles colorbar refresh as well. Fixed report_pixel accordingly
- Added: Function to do and plot the FFT power of some signal
Hierarchial Network plot coverage feature

- Added: Plot for the coverage of the network. Does a two layer plot, nice and uses ImageGrid.
Fisher info correction, fisher info comparison

- Fix: ExperimentalVolume and FisherInformation launchers were using the wrong covariance…
- Fix: Theoretical Fisher information corrected and correct now.
- Fix: Rho correct…
- Fix: Labels on 2D plots swapped.
- Added: Estimate precision from samples average random subset.
Plots for the paper

- Added: Population code plots and 3d activity fixed.
- Added: Hierarchical network population code
- Added: Fisher info comparison