Updated logo for browser tab title to colored one

apps/remix-ide/src/index.html

@@ -26,7 +26,7 @@
 	<meta http-equiv="X-UA-Compatible" content="chrome=1">
 	<title>Remix - Ethereum IDE</title>
 	<link rel="stylesheet" href="assets/css/pygment_trac.css">
-	<link rel="icon" type="x-icon" href="assets/img/icon.png">
+	<link rel="icon" type="x-icon" href="assets/img/remix-logo-blue.png">
 	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/intro.js/4.1.0/introjs.min.css">
 	<link rel="stylesheet" integrity="ha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf"
 		crossorigin="anonymous" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css">

apps/remix-ide/src/webpack.index.html

@@ -26,7 +26,7 @@
 	<meta http-equiv="X-UA-Compatible" content="chrome=1">
 	<title>Remix - Ethereum IDE</title>
 	<link rel="stylesheet" href="assets/css/pygment_trac.css">
-	<link rel="icon" type="x-icon" href="assets/img/icon.png">
+	<link rel="icon" type="x-icon" href="assets/img/remix-logo-blue.png">
 	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/intro.js/4.1.0/introjs.min.css">
 	<link rel="stylesheet" integrity="ha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf"
 		crossorigin="anonymous" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css">