Fix spite shade calculation

Greying Grief now greys Spite,
and similarly blacking Spite blacks Grief.

When calculating Spite, if Grief is greyed, the exponent is already reduced
and the Spite exponent doesn't need to be reduced further.

src/public/js/burning.js

@@ -742,13 +742,18 @@ function BurningCtrl($scope, $http, $modal, $timeout, settings, appropriateWeapo
         return;
 
       $scope.attributeShade[attrName] = 'G';
+      if('Grief' == attrName) {
+        $scope.attributeShade['Spite'] = 'G';
+      }
     }
     else if (attr.shade == 'G'){
       $scope.attributeShade[attrName] = 'B';
+      if('Spite' == attrName) {
+        $scope.attributeShade['Grief'] = 'B';
+      }
     }
     else
       console.log("Error: changing shade of attribute failed: unknown shade " + stat.shade);
-
   }
 
   $scope.incrementSkill = function(skill){
@@ -1105,7 +1110,8 @@ function BurningCtrl($scope, $http, $modal, $timeout, settings, appropriateWeapo
     }
     else if ( "Spite" == name ){
       var spite = computeModifiers(name);
-      if($scope.attributeShade[name] == 'G'){
+      // If Grief is grey, the shadeshift cost has already been payed in the Grief exponent calculation
+      if($scope.attributeShade[name] == 'G' && $scope.attributeShade["Grief"] == 'B'){
         spite -= 5;
       }
       spite += bonus;