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

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

Packages/ohif-viewerbase/client/components/basic/aboutModal/aboutModal.html

@@ -28,7 +28,7 @@
                     </a>
                     <div class="logo p-x-3 p-y-3">
                         <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>
                         <a class="logoText"
                            target="_blank"