Updated sorting architecture so the collections can specify the sort-oddities instead of in backgrid column definitions.

src/UI/Mixins/AsSortedCollection.js

@@ -0,0 +1,45 @@
+'use strict';
+
+define(
+    ['underscore', 'Config'],
+    function (_, Config) {
+
+        return function () {
+
+            this.prototype._getSortMappings = function () {
+                var result = {};
+                
+                if (this.sortMappings) {
+                    _.each(this.sortMappings, function (values, key) {
+                        var item = {
+                            name: key,
+                            sortKey: values.sortKey || key,
+                            sortValue: values.sortValue
+                        };
+                        result[key] = item;
+                        result[item.sortKey] = item;
+                    });
+                }
+
+                return result;
+            };
+
+            this.prototype._getSortMapping = function (key) {
+                var sortMappings = this._getSortMappings();
+
+                return sortMappings[key] || { name: key, sortKey: key };
+            };
+
+            var originalSetSorting = this.prototype.setSorting;
+            this.prototype.setSorting = function (sortKey, order, options) {
+                var sortMapping = this._getSortMapping(sortKey);
+
+                options = _.defaults({ sortValue: sortMapping.sortValue }, options || {});
+
+                return originalSetSorting.call(this, sortMapping.sortKey, order, options);
+            };
+
+            return this;
+        };
+    }
+);