hopefully the last time I fix Safari jQuery icons

CHANGELOG

+minerva (12.2.0~beta.3) unstable; urgency=medium
+  * Bug fix: Icons are still not properly loaded on Safari (#661)
+
 minerva (12.2.0~beta.2) unstable; urgency=medium
   * Bug fix: order of the overlays is defined explicitly also for general 
     overlays (#684)

frontend-js/src/main/js/minerva.js

@@ -35,6 +35,17 @@ var Functions = require('./Functions');
 
 var customMap, leftPanel, topMenu, legend, mapContextMenu, selectionContextMenu;
 
+/**
+ * Safari has some issue with the jquery css or the way JSF presents the CSS resources.
+ * This is a hack that fixes this issue by forcing the icon sprite png to be loaded once the document is ready.
+ */
+$('document').ready(function() {
+  var style = document.createElement("style");
+  var styleText = document.createTextNode(".ui-icon { background-image: url(/minerva/javax.faces.resource/images/ui-icons_616161_256x240.png.xhtml?ln=primefaces-aristo&m_version=Unknown) !important; }");
+  style.appendChild(styleText);
+  document.head.appendChild(style);
+});
+
 /**
  *
  * @param {CustomMapOptions} params