Make storage of moments consistent with manual

The deciles of some posterior moments were erroneously saved in a field
Distribution, while the manual specifies they are name deciles.
Merge remote-tracking branch 'upstream/master'
Add missing legend to plot

Add missing legend to sensitivity plot
Bugfix in dyn_saveas

Fixed a bug for the non-Octave version where only the last active figure
was printed instead of the figure with the actual handle. Octave
eps-version still needs to be taken care of.
Merge pull request #316 from JohannesPfeifer/master

Change of Field name to be consistent with manual