1) Allow screen-reader to read relationship attributes for tab, tabpanels and tables under it. Similar changes are done for subnode controls.

2) Add role="img" for font icons.

Fixes #4764

web/pgadmin/static/vendor/backgrid/backgrid.js

@@ -718,6 +718,7 @@ var InputCellEditor = Backgrid.InputCellEditor = CellEditor.extend({
   */
   render: function () {
     var model = this.model;
+    this.$el.attr('aria-label', this.column.get("label"));
     this.$el.val(this.formatter.fromRaw(model.get(this.column.get("name")), model));
     return this;
   },
@@ -2184,6 +2185,7 @@ var HeaderCell = Backgrid.HeaderCell = Backbone.View.extend({
     this.$el.append(label);
     this.$el.addClass(column.get("name"));
     this.$el.addClass(column.get("direction"));
+    this.$el.attr("role", "columnheader");
     this.delegateEvents();
     return this;
   }
@@ -2840,6 +2842,9 @@ var Grid = Backgrid.Grid = Backbone.View.extend({
   /** @property */
   footer: null,
 
+  /** @property */
+  attr: null,
+
   /**
      Initializes a Grid instance.
 
@@ -2851,6 +2856,7 @@ var Grid = Backgrid.Grid = Backbone.View.extend({
      @param {Backgrid.Body} [options.body=Backgrid.Body] An optional Body class to override the default.
      @param {Backgrid.Row} [options.row=Backgrid.Row] An optional Row class to override the default.
      @param {Backgrid.Footer} [options.footer=Backgrid.Footer] An optional Footer class.
+
    */
   initialize: function (options) {
     // Convert the list of column objects here first so the subviews don't have
@@ -2879,6 +2885,8 @@ var Grid = Backgrid.Grid = Backbone.View.extend({
       this.footer = new this.footer(filteredOptions);
     }
 
+    this.attr = options.attr || {};
+
     this.listenTo(this.columns, "reset", function () {
       if (this.header) {
         this.header = new (this.header.remove().constructor)(filteredOptions);
@@ -2960,6 +2968,8 @@ var Grid = Backgrid.Grid = Backbone.View.extend({
     }
 
     this.$el.append(this.body.render().$el);
+    this.$el.attr("role", "table");
+    this.$el.attr(this.attr);
 
     this.delegateEvents();