Include default recipe on msdotnet2 core install
Merge ms_dotnet4 and ms_dotnet45 recipes

Merge ms_donet45 to ms_dotnet4 recipe, because they are fundamentally the same.
Replace wrong option "/quiet" by the correct "/q" switch.
Add Server 2012 and 2012R2 support, even if version < 4.5.2 won't be installed.