Add info to dynamic and static file headers that auxiliary equations may be present
Cosmetic fixes to dyn_ramsey_static.m

Also makes sure that the check flag is returned and the steady state file always called if it exists. Otherwise, parameters might not be updated and NaN not detected.
Fix bug in dyn_ramsey_static.m with steady state file that resulted in incorrect steady state when running twice

The x returned by a steady state file includes Lagrange multipliers. When starting with 0 multipliers, the steady state of the multipliers is computed correctly. But when running it a second time like in a subsequent call to stoch_simul, the algorithm thinks that elements of xx are 0 which they aren't. As a result, it finds minus the multiplier as the solution, resulting in an output of 0 for all multipliers.
Test the result of steady state computation for correctness

- Checks correctness of steady state file
- Tests whether result of computation really is a steady state
- Also eliminates case that can never be reached
Add bunch of unit test checking the correctness of Ramsey computation with initval and steady state files
Account for presence of Lagrange multipliers and auxiliary equations in display_problematic_vars_Jacobian.m
Improve computation of outer product gradient for univariate Kalman algorithms, by exploiting the larger number of individual densities computed during recursions (used in optimizer number 5).
Fix formating for Makefile.am

Replaced spaces by tabs
when flag==0 (or options_.hess==0), we force to use the hessian from outer product gradient computed in optimizer == 5.
Provisions for moment calibration.
Sensitivity analysis for irf and moment calibration, with new function /gsa/map_calibration.m
Added new tests/gsa/ls2003a.mod for testsuite of irf/moment calibration

To be done:
- extend SA of calibration to MC and posterior samples (currently uses prior sample only)
- documentaion
- partial progress to close #267
Add missing files for Ramsey unit test with steady state.
Merge pull request #721 from rattoma/gsa

Provisions for moment calibration.
Merge pull request #696 from JohannesPfeifer/Ramsey_steady_state

Bugfix Ramsey steady state with steady state files
Increased default number of particles.
Changed local variable name (index of the main loop).
Added option number_of_particles (estimation command, non linear filters).
Do not consider variables that are not column vectors.
Fixed bugs:

(1) The non_linear_dsge_likelihood routine was not adapted to the last changes related to the way data are handled.

(2) The removal of the trend was missing.
Added option resampling (estimation command, non linear filters).
Added option resampling_threshold (estimation command, non linear filters).