Add orientation check for tab bar on initialize.

app/view/main/Main.js

@@ -385,5 +385,6 @@ Ext.define('Rambox.view.main.Main', {
 		,add: 'updatePositions'
 		,remove: 'updatePositions'
 		,childmove: 'updatePositions'
+		,beforerender: 'initialize'
 	}
 });

app/view/main/MainController.js

@@ -3,6 +3,16 @@ Ext.define('Rambox.view.main.MainController', {
 
 	,alias: 'controller.main'
 
+	,initialize: function( tabPanel ) {
+		const config = ipc.sendSync('getConfig');
+
+		if ( config.left_tabbar === true ) {
+			const mainView = Ext.cq1('app-main');
+			mainView.setTabPosition('left');
+			mainView.setTabRotation(0);
+		}
+	}
+
 	// Make focus on webview every time the user change tabs, to enable the autofocus in websites
 	,onTabChange: function( tabPanel, newTab, oldTab ) {
 		var me = this;