don't try to close connections in web_server.py (to may cause exceptions when using ssl)

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9281 a83610d8-ad2a-0410-a6ab-fc0612d85776
improve alert errors for peer alerts

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9282 a83610d8-ad2a-0410-a6ab-fc0612d85776