Merge branch 'feature/unbreak-opengl' into develop

 [SVCS-566] Closes: #319

Author: felliott

mfr/server/static/css/mfr.css

@@ -42,14 +42,16 @@ This CSS was stripped out of base.css from the osf-style repo.
  align-items: center;
  width: 100%;
  height: 250px;
+ top: 0;
+ left: 0;
 }
 
 .embed-responsive-pdf {
  padding-bottom: 95%;
 }
 
 #mfrIframe iframe {
- display: none;
+ opacity: 0.0;
 }
 
 #mfrIframe {

mfr/server/static/js/mfr.js

@@ -82,7 +82,7 @@
  self.pymParent.el.appendChild(self.spinner);
  $(self.pymParent.iframe).on('load', function() {
  self.pymParent.el.removeChild(self.spinner);
- this.style.display = "block"
+ this.style.opacity = "1.0"
  })
 
  self.pymParent.onMessage('embed', function(message) {