cases manquantes d�claration des revenus 2013
Sort imports.
Rename Formula calculate to function. Rename prestation to column.
In columns, rename _default to default, _dtype to dtype & _func to function.
Add AlternativeFormula (for age & agem).
Remove commented code.
Merge pull request #77 from bouvard/master

cases manquantes déclaration des revenus 2013
Add columns rfr_n_1 and exonere_taxe_habitation.
Comparator fixed

Plein de différences au cours des comparaisons : on s'y attèle cette
après-midi!
Comparator IPP after weekend commits
In columns, rename _default to default, _dtype to dtype & _func to function.