New dialog presents a yes/no choice with alternate non-exclusive actions

proj/vs2017/Common/Common.vcxproj

@@ -344,6 +344,7 @@
     <None Include="..\..\..\rsrc\dialogs\dialog.css" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\..\src\dialogxml\dialogs\btnpanel.cpp" />
     <ClCompile Include="..\..\..\src\dialogxml\keycodes.cpp" />
     <ClCompile Include="..\..\..\src\dialogxml\dialogs\3choice.cpp" />
     <ClCompile Include="..\..\..\src\dialogxml\dialogs\choicedlog.cpp" />
@@ -441,6 +442,7 @@
     <ClCompile Include="..\..\..\src\view_dialogs.cpp" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="..\..\..\src\dialogxml\dialogs\btnpanel.hpp" />
     <ClInclude Include="..\..\..\src\scenario\town_import.tpp" />
     <ClInclude Include="..\..\..\src\alchemy.hpp" />
     <ClInclude Include="..\..\..\src\damage.hpp" />
@@ -618,4 +620,4 @@
     </Copy>
     <Message Text="changed:@(ChangedScenarios)" Importance="high" />
   </Target>
-</Project>
+</Project>