Refactored logic to updateCurrentFilteredElfinPage function to remove 
code duplication.
Refactored logic to filterSortElfins function to remove code 
duplication.
Add support for OR in prestationListFilter prestation.IDENTIFIANT.DE 
field.
Added new criteria currentYearAndFormerPrestationSearch,
nextYearPrestationSearch.
Add new prestation sub tabs with currentYearAndFormerPrestationSearch,
nextYearPrestationSearch restriction criteria.
Add new createNewPrestation function to allow nice looking creation from
tab button.
Finalised new prestation tab and sub tabs including
createNewPrestation() call from empty tab.