Some cleaning
Switching agem instead of age
Merge branch 'dev' of https://github.com/openfisca/openfisca into dev
cleaning columns.py and unifying model.py
reorganizing the structure of the folders of the table converters.
2nd commit of folder reorganization
Merge pull request #270 from jsantoul/dev

Cleaned the presta fam to ease reading
Fixing minor bug w/ data grinder.
Merge branch 'dev' of https://github.com/openfisca/openfisca into dev
trying to debug the multitable process

Miserable fail
polish of the 3 tables process
Merge pull request #272 from jsantoul/dev

Polishing the survey simulation process w/ 3 tables
Merge pull request #273 from benjello/dev

Check rsa_act
Starting modifying columns to introduce freq
Merge and fix conflict