Add symbols to make app more readable

Helios/Views/Configurator/ConfiguratorResult.cshtml

@@ -49,10 +49,10 @@
             {
                 <tr>
                     <td>
-                        @panel.PanelEfficiency
+                        @panel.PanelEfficiency%
                     </td>
                     <td>
-                        @panel.InstallationCost
+                        £@panel.InstallationCost
                     </td>
                     <td>
                         @panel.PowerGeneratedSummer

Helios/Views/Configurator/PanelDetails.cshtml

@@ -12,10 +12,10 @@
         <h5>Panel Details</h5>
         <ul>
             <li>
-                Efficiency: @Model.PanelEfficiency
+                Efficiency: @Model.PanelEfficiency%
             </li>
             <li>
-                Installation Cost: @Model.InstallationCost
+                Installation Cost: £@Model.InstallationCost
             </li>
         </ul>
     </div>