More work on debugger + cleaning entity attribute
Add prestation to debugger
Merge branch 'dev' of https://github.com/openfisca/openfisca into dev
Debugger works for non aggregated menages
Debugger returns a mixed aggregates/non aggregates table for menages
test_laurence sorts aggregates, debugger modified to try to get erf data

test_laurence shows erf data, rows sorted, columns not sorted
Comment test_laurence, start debugging act5

+ pull changes in build_survey from jerome
Fixed error in 01pre_proc, cleaned commentaries
Saving/Loading method for simulation implemented, works
Add erf variables to debugger final table
Created classes for test_laurence and debugger
Last commit at CSGP : reorganize  newly created classes
Integrating debugger
Fixing unicode strings
Debugging enity col in aggregates