OHIF-149 The viewer shall allow the root URL to be changed - WIP

- Use absoluteUrl for hard-coded paths in html and js

OHIFViewer/client/components/ohifViewer/ohifViewer.html

@@ -5,7 +5,7 @@
                class="brandSection pull-left"
                href="http://ohif.org">
                 <svg class="logoImage">
-                    <use xlink:href="/packages/ohif_viewerbase/assets/icons.svg#icon-ohif-logo"></use>
+                    <use xlink:href={{absoluteUrl "packages/ohif_viewerbase/assets/icons.svg#icon-ohif-logo"}}></use>
                 </svg>
                 <div class="logoText">
                     Open Health Imaging Foundation