Add all datatable options

rename the _num_table ans _subset in num_table and subset
survey_filename can now be a pandas object
Merge branch 'dev' of https://github.com/openfisca/openfisca into dev
bug correction for scenario

num_table, subset and print_missing are now attributes of a simulation
and not only of a surveysimulation.
Removing duplicated noindiv
Merge branch 'dev' of https://github.com/openfisca/openfisca into dev