Improved loading indicators. Added % loaded to viewports and thumbnails

OHIFViewer/client/head.html

@@ -2,7 +2,7 @@
     <meta charset="utf-8">
     <title>OHIF Viewer</title>
     <meta name="description" content="Open Health Imaging Foundation DICOM Viewer">    
-    <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1,maximum-scale=1,user-scalable=no, minimal-ui">
+    <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1,maximum-scale=1,user-scalable=no">
     <!--Best display for mobile devices-->
     <meta http-equiv="cleartype" content="on">
     <meta name="MobileOptimized" content="320">