Change all Quay.io references to Quay, fix tour and change logo

Fixes #741

static/js/pages/about.js

@@ -5,7 +5,7 @@
   angular.module('quayPages').config(['pages', function(pages) {
     pages.create('about', 'about.html', null, {
       'title': 'About Us',
-      'description': 'About Quay.io'
+      'description': 'About Us'
     });
   }]);
 }());

static/js/pages/tour.js

@@ -5,7 +5,7 @@
   angular.module('quayPages').config(['pages', function(pages) {
     pages.create('tour', 'tour.html', TourCtrl, {
       'title': 'Feature Tour',
-      'description': 'Take a tour of Quay.io\'s features'
+      'description': 'Take a tour of Quay\'s features'
     });
   }]);
 

static/js/pages/tutorial.js

@@ -6,7 +6,7 @@
     pages.create('tutorial', 'tutorial.html', TutorialCtrl, {
       'newLayout': true,
       'title': 'Tutorial',
-      'description': 'Basic tutorial on using Quay.io'
+      'description': 'Basic tutorial on using Quay'
     })
   }]);