Visualization / CSV ​Export of tickets statistics

Visualization / CSV Export of tickets list :

Add preferences to choose the display mode (and export) statistics on the ticket list: by default it is day, hour, minute - not very usable in case of spreadsheet calculation. therefore have the choice between standard and display in minutes:

Exemple : Html::timestampToString($data["takeintoaccount_delay_stat"]) ou Html::formatNumber($data["takeintoaccount_delay_stat"] / 3600, false, 5)