Add dated legislations validation.
Ignore .mo files.
Adding cerfa_field and info to Column
Add requirements.txt.
Merge pull request #3 from bouvard/master

Adding cerfa_field and info to Column
Improve requirements.
Change order of extra requirements.
Revert latest commit.
Add PyTables requirement.
Correct package name of PyTables.
Remove PyTables version.
Specify Git branch for Biryani.
Merge branch 'master' of https://github.com/openfisca/openfisca-core