Merged LesionTracker and OHIF Viewer, refactored out common components

LesionTracker/client/components/viewer.html

@@ -0,0 +1,9 @@
+<template name="viewer">
+    <head>
+        <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1,maximum-scale=1,user-scalable=no">
+    </head>
+    <div id="viewer" class="viewer">
+        {{ >hidingPanel }}
+        {{ >viewerMain }}
+    </div>
+</template>