translation update

lang/nl.json

plugins/CoreAdminHome/lang/cs.json

plugins/CoreAdminHome/lang/el.json

plugins/CoreAdminHome/lang/fr.json

plugins/CoreAdminHome/lang/it.json

plugins/CorePluginsAdmin/lang/fr.json

plugins/DevicePlugins/lang/nl.json

plugins/DevicesDetection/lang/it.json

plugins/DevicesDetection/lang/nl.json

plugins/Events/lang/nl.json

plugins/Goals/lang/nl.json

plugins/Insights/lang/nl.json

plugins/Live/lang/nl.json

plugins/Resolution/lang/nl.json

plugins/ScheduledReports/lang/nl.json

plugins/SegmentEditor/lang/nl.json

plugins/SitesManager/lang/nl.json

plugins/Transitions/lang/nl.json

plugins/UserCountryMap/lang/cs.json