Add localization for archived/unarchived messages

i18n/en.i18n.json

@@ -366,6 +366,8 @@
   "Restart" : "Restart",
   "Restart_the_server" : "Restart the server",
   "Room" : "Room",
+  "Room_archived" : "Room archived",
+  "Room_unarchived" : "Room unarchived",
   "Room_name_changed" : "Room name changed to: <em>__room_name__</em> by <em>__user_by__</em>",
   "Room_name_changed_successfully" : "Room name changed successfully",
   "Room_not_found" : "Room not found",

packages/rocketchat-channel-settings/client/views/channelSettings.coffee

@@ -22,14 +22,14 @@ Template.channelSettings.events
 
 		Meteor.call 'archiveRoom', t.data.rid, true, (err, results) ->
 			return toastr.error err.reason if err
-			toastr.success 'Channel archived'
+			toastr.success TAPi18n.__ 'Room_archived'
 
 	'click .unarchive': (e, t) ->
 		e.preventDefault()
 
 		Meteor.call 'unarchiveRoom', t.data.rid, true, (err, results) ->
 			return toastr.error err.reason if err
-			toastr.success 'Channel unarchived'
+			toastr.success TAPi18n.__ 'Room_unarchived'
 
 			# switch room.t
 			# 	when 'c'