At order=2, the variance decomposition is still based on order=1. This
commit introduces a warning. See issue #278
(https://github.com/DynareTeam/dynare/issues/278). This information that
the variance decomposition is only triggered at periods=0 has been added
to the manual.

Add option and code for endogenous priors according to
Christiano/Trabandt/Walentin 2011, JEDC. Still needs to be integrated to
manual and pre-processor.

Closes issue #315 (https://github.com/DynareTeam/dynare/issues/315)

still related to #316 (https://github.com/DynareTeam/dynare/pull/316)

If options_.SpectralDensity.trigger is specified, identification would
otherwise plot graphs in every MC step

Change of Field name to be consistent with manual

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.

Add missing legend to sensitivity plot

reporting: @graph: accept dynDate ranges for shade and xrange and float lower/upper bound for yrange

Return zero if A and B have no common frequencies (previously an error was returned).