use createDelegate rather than bind, saving implementing our own method of setting a functions scope

deluge/ui/web/js/deluge-all/Deluge.Events.js

@@ -74,7 +74,7 @@ Copyright:
 			Ext.each(this.toRegister, function(eventName) {
 				Deluge.Client.web.register_event_listener(eventName);
 			});
-			this.poll = this.poll.bind(this);
+			this.poll = this.poll.createDelegate(this);
 			this.running = setInterval(this.poll, 2000);
 			this.poll();
 		},

deluge/ui/web/js/deluge-all/Deluge.Statusbar.js

@@ -96,7 +96,7 @@ Ext.deluge.Statusbar = Ext.extend(Ext.ux.StatusBar, {
 				var str = (config.value.formatter) ? config.value.formatter(config.value.value) : config.value.value;
 			}
 			item.setText(str);
-		}.bind(this);
+		}.createDelegate(this);
 		
 		updateStat('connections', {
 			value: {value: stats.num_connections},

deluge/ui/web/js/deluge-all/Deluge.UI.js

@@ -84,7 +84,7 @@ Deluge.UI = {
 			Deluge.Login.show();
 		}, this, {single: true});
 	
-		this.update = this.update.bind(this);
+		this.update = this.update.createDelegate(this);
 	},
 
 	update: function() {

deluge/ui/web/js/deluge-all/Deluge.js

@@ -38,16 +38,6 @@ Ext.namespace('Ext.deluge');
 Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
 
 (function() {
-    /* Add some helper functions to Ext */
-    Ext.apply(Function.prototype, {
-		bind: function(scope) {
-			var self = this;
-			return function() {
-				return self.apply(scope, arguments);
-			}
-		}
-    });
-    
     Ext.apply(Ext, {
 		escapeHTML: function(text) {
 			text = String(text).replace('<', '&lt;').replace('>', '&gt;');