Transfer hardcoded osr options to options structure

Implements #423. To be done: add preprocessor options for tolf and maxit.
Fixed bug reported by Johannes (presample option was non active in nonlinear filters).
test: use csv instead of mat file
bug fix: matlab2tikz path
Added explicit reference to the training sample in the description of the presample option of the estimation command.
doc: sbvar stub, ref #237
build system bug fix
Fix clean rule wrt reporting files
Merge pull request #432 from JohannesPfeifer/osr_crit

Transfer hardcoded osr options to options structure
doc: fix typo
osr: add maxit option ref #423
osr: add tolf option closes #423
Merge branch 'master' of https://github.com/DynareTeam/dynare