Include missing resource files.

Author: IvenBach

Rubberduck.Resources/Rubberduck.Resources.csproj

@@ -690,6 +690,10 @@
     <Resource Include="Icons\Fugue\ui-tab-content.png" />
     <Resource Include="Icons\Custom\PNG\MdiForm.png" />
     <Resource Include="Icons\Fugue\document-import.png" />
+    <Resource Include="Icons\Custom\PNG\AddMdiForm.png" />
+    <Resource Include="Icons\Custom\PNG\AddUserControl.png" />
+    <Resource Include="Icons\Custom\PNG\AddPropertyPage.png" />
+    <Resource Include="Icons\Custom\PNG\AddUserDocument.png" />
     <Content Include="Splash.png" />
     <Resource Include="Icons\Fugue\lock--exclamation.png" />
     <Resource Include="Rubberduck.png" />