Block most requests with null referers

git-svn-id: svn://svn.code.sf.net/p/kolmafia/code@12023 b29ace70-8910-0410-8dcc-aa2fc6433167
mer-kin gladiator mask lets you breathe underwater

git-svn-id: svn://svn.code.sf.net/p/kolmafia/code@12024 b29ace70-8910-0410-8dcc-aa2fc6433167