Merge pull request #96 from bixiou/master

charges deductibles now use dated_formula
Merge pull request #99 from bixiou/master

updated and partially completed credits impots and scripts to interact w...
Fix alignment
Add missing line
changed an error that prevented the first test to execute.
Add test to detect Enums without enumeration.
Replace tabs with spaces and remove trailing spaces.
Comment out column without enumeration and update datatrees.
Improve spelling.
Ignore some input columns that are not used in formulas.
Remove from datatrees the input columns that are not used in formulas. Improve detection of such columns in test_columns.
Merge pull request #100 from adrienpacifico/master

changed an error that prevented the first test to execute.
Rename column "prenom" to "nom_individu" and add names to other entities.
Remove too stringent assert when importing survey dataframe
Fixing some fucntion to deal with entity heterogeneity
Merge pull request #103 from benjello/master

Fixing some fucntion to deal with entity heterogeneity
Minor modif and fix survey import
Suggest "PACSé" or "Marié" instead of "Célibataire" when foyer_fiscal contains 2 "declarants" without "statmarit".
Revert "Use numeric IDs for new "familles", "foyer-fiscaux" & "ménages" instead of uuid."

This reverts commit 2f4012e65edb778c951bccbc8ac78153f5ece81a.
Add i18n.