Also fetch GroupID and highlight groups in transactions-view

web/account.html

@@ -26,6 +26,9 @@
                 {{.CategoryGroup}} : {{.Category}}
             {{end}}
         </td>
+        <td>
+            {{if .GroupID.Valid}}☀{{end}}
+        </td>
         <td>
             <a href="/budget/{{$.Budget.ID}}/transaction/{{.ID}}">{{.Memo}}</a>
         </td>