feat(openid-connect): Switch to generic OIDC Client library instead of using Keycloak.js (#273)

OHIFViewer/client/components/ohifViewer/ohifViewer.styl

@@ -32,7 +32,7 @@ body>.header
     .menu-toggle
       display: inline-block
       height: 18px
-      
+
     .research-use
       font-size: 13px
       theme('color', '$textSecondaryColor')
@@ -62,7 +62,6 @@ body>.header
 
     .brand
       height: 100%
-      width: 80%
       line-height: $topBarExpandedHeight - 10px
 
       .logo-image