Say that the project is retired in the web pages

git-svn-id: https://llvm.org/svn/llvm-project/vmkit/trunk@216831 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the color in get_started.html

git-svn-id: https://llvm.org/svn/llvm-project/vmkit/trunk@216832 91177308-0d34-0410-b5e6-96231b3b80d8