Started replacing toolbar in OHIF Viewer with that of Lesion Tracker (OHIF-49)

OHIFViewer/client/components/flexboxLayout/flexboxLayout.styl

@@ -7,7 +7,7 @@ $lesionsSidebarMenuWidth = 450px
   flex: 1
   flex-flow: row nowrap
   align-items: stretch
-  height: calc(100% - 78px);
+  height: 'calc(100% - %s)' %toolbarHeight;
   width: 100%
 
   .sidebarMenu