Alt-H now clears hotlists on WeeChat relay

Fixes #832.

js/connection.js

@@ -420,6 +420,10 @@ weechat.factory('connection',
         }
     };
 
+    var sendHotlistClearAll = function() {
+        sendMessage("/input hotlist_clear");
+    };
+
     var requestNicklist = function(bufferId, callback) {
         // Prevent requesting nicklist for all buffers if bufferId is invalid
         if (!bufferId) {
@@ -513,6 +517,7 @@ weechat.factory('connection',
         sendMessage: sendMessage,
         sendCoreCommand: sendCoreCommand,
         sendHotlistClear: sendHotlistClear,
+        sendHotlistClearAll: sendHotlistClearAll,
         fetchMoreLines: fetchMoreLines,
         requestNicklist: requestNicklist,
         attemptReconnect: attemptReconnect

js/inputbar.js

@@ -364,6 +364,7 @@ weechat.directive('inputBar', function() {
                         buffer.unread = 0;
                         buffer.notification = 0;
                     });
+                    connection.sendHotlistClearAll();
                 }
 
                 var caretPos;