Add ability to acknowledge all system log messages (#4159)

interface/web/monitor/lib/lang/ar_syslog_list.lng

interface/web/monitor/lib/lang/bg_syslog_list.lng

interface/web/monitor/lib/lang/br_syslog_list.lng

interface/web/monitor/lib/lang/ca_syslog_list.lng

interface/web/monitor/lib/lang/cz_syslog_list.lng

interface/web/monitor/lib/lang/de_syslog_list.lng

interface/web/monitor/lib/lang/dk_syslog_list.lng

interface/web/monitor/lib/lang/el_syslog_list.lng

interface/web/monitor/lib/lang/en_syslog_list.lng

interface/web/monitor/lib/lang/es_syslog_list.lng

interface/web/monitor/lib/lang/fi_syslog_list.lng

interface/web/monitor/lib/lang/fr_syslog_list.lng

interface/web/monitor/lib/lang/hr_syslog_list.lng

interface/web/monitor/lib/lang/hu_syslog_list.lng

interface/web/monitor/lib/lang/id_syslog_list.lng

interface/web/monitor/lib/lang/it_syslog_list.lng

interface/web/monitor/lib/lang/ja_syslog_list.lng

interface/web/monitor/lib/lang/nl_syslog_list.lng

interface/web/monitor/lib/lang/pl_syslog_list.lng

interface/web/monitor/lib/lang/pt_syslog_list.lng