Updated translation: French (France) by arnaud21, DenisChenu
Updated translation: Italian by lfanfoni
Updated translation: Italian (Informal) by lfanfoni
Updated translation: Norwegian (Bokmål) by pmonstad
Updated translation: Norwegian (Nynorsk) by pmonstad
Updated translation: Polish by elisa
Updated translation: Italian (Informal) by lfanfoni
Fixed issue #8088: Error: JSON undefined on IE while click on change chart type button on statistics
Fixed issue: Error when viewing participants in CPDB
Fixed issue #8242: Wrong two digit year recorded

Dev: Datepicker uses yy for four digit year, y for two digits.
Dev: wrong jsdate lead to truncation of year ("2013"->"20")