Added chat clear keybinding.
Added chat clear keybinding.

thelounge/lounge,MaxLeiter/shout,realies/lounge,Audio/shout,busseyl/shout,FryDay/lounge,rockhouse/lounge,cha2maru/shout,nickel715/shout,MaxLeiter/lounge,busseyl/shout,erming/shout,cha2maru/shout,diddledan/shout,libertysoft3/lounge-autoconnect,harishanand95/shout_irc_bouncer_openshift,diddledan/shout,Calinou/shout,ScoutLink/lounge,Calinou/shout,karen-irc/karen,FryDay/lounge,williamboman/lounge,FryDay/lounge,realies/lounge,floogulinc/Shuo,realies/lounge,run-project/shout,libertysoft3/lounge-autoconnect,floogulinc/Shuo,togusafish/floogulinc-_-Shuo,nickel715/shout,MaxLeiter/lounge,metsjeesus/lounge,williamboman/lounge,rockhouse/lounge,astorije/shout,williamboman/shout,run-project/shout,togusafish/floogulinc-_-Shuo,metsjeesus/lounge,williamboman/lounge,astorije/shout,MaxLeiter/lounge,olivierlambert/shout,thelounge/lounge,ScoutLink/lounge,libertysoft3/lounge-autoconnect,ScoutLink/lounge,rockhouse/lounge,MaxLeiter/shout,sebastiencs/lounge,sebastiencs/lounge,harishanand95/shout_irc_bouncer_openshift,metsjeesus/lounge,Audio/shout,sebastiencs/lounge,karen-irc/karen,williamboman/shout,erming/shout,olivierlambert/shout