Cn alexa sites

These are the only sites in the alexa top list for China (as retrieved Sept 29 2014) which work as fronts for Cloudflare sites.  The certs were retrieved with

    openssl s_client -connect alexamaster.com:443 -showcerts

and then found to match those in existing domains (e.g. gamepedia.com).

I haven't merged this nor uploaded them to S3 because I'm not sure I got it right and did all necessary steps.  **For some reason, running the script added some `redialattempts: 2` lines.**

I also made a minor edit to the check for file extensions to filter out, so it would ignore vim swap files and, for robustness, the extension strings when appearing anywhere else than in the end of the file name.  I have checked that this doesn't alter the set of files currently filtered out.