If I want to add this lines for configuring an asp.net MVC4 app,
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true"><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>
</configuration>
in which file should I put them? Should I create an app.config file or put them in the web.config file? I used to add them for a console app or class library app.config and I got what I need, but now I have an asp.net mvc4 project.