added invalidity hints to item side-properties

- added :invalid definition to side-properties CSS
-  defined common color for invalidity
- now using disabled input for automatically calculated properties

src/templates/actor/partials/talents-overview.hbs

@@ -29,6 +29,7 @@
 {{#*inline "talentRankValue"}}
     <input class="item-num-val item-change" data-dtype="Number" type="number" min="0" step="1"
         {{#if (eq property 'base') }}max="{{item.data.data.talentRank.max}}"{{/if}}
+        {{disabled}}
         data-property="data.talentRank.{{property}}" value="{{lookup item.data.data.talentRank property}}"
         title="{{localize localizeString}}" />
 {{/inline}}
@@ -61,7 +62,7 @@
             {{> talentRankValue item=item property='mod' localizeString='DS4.TalentRankMod'}}
             <span> = </span>
             {{!-- derived total rank --}}
-            <span>{{item.data.data.talentRank.total}}</span>
+            {{> talentRankValue item=item property='total' localizeString='DS4.TalentRankTotal' disabled='disabled'}}
         </div>
         {{!-- description --}}
         <div class="flex4 item-description">{{{item.data.data.description}}}</div>