inventory sorting

Add inventory sorting buttons based on name, attribute, and set (armoire):
-  Each gear[klass] has its own sorting buttons and sorting state including costume classes
-  The attributes sort descending when selected, then by sum of all attributes
-  There is no default sort
-  The armoire also sorts by set which sorts by item[set] descending, it does not sort within a set (ex "1 of 3" vs "2 of 3")
-  Name sorts by .text() ascending

test/spec/controllers/sortableInventoryCtrlSpec.js

@@ -0,0 +1,32 @@
+'use strict';
+
+describe('Sortable Inventory Controller', function() {
+  var scope;
+
+  beforeEach(inject(function($rootScope, $controller) {
+    scope = $rootScope.$new();
+    $controller('SortableInventoryController', {$scope: scope});
+  }));
+
+  it('has no default sort order', function(){
+    expect(scope.order).to.not.exist;
+  });
+
+  it('sets sort criteria for all standard attributes', function(){
+    var oldOrder = scope.order;
+
+    var attrs = ['con', 'int', 'per', 'str', 'name', 'set'];
+
+    attrs.forEach(function (attribute) {
+      scope.setOrder(attribute);
+      expect(scope.order).to.exist;
+      expect(scope.order).to.not.eql(oldOrder);
+      oldOrder = scope.order;
+    });
+  });
+
+  it('does nothing when missing sort criteria', function(){
+    scope.setOrder('foooo');
+    expect(scope.order).to.not.exist;
+  });
+});