Migration and upgrade

I've whitelisted some of these - feel free to add more as/when you think of them: MediaWiki:Captcha-addurl-whitelist.

I have no permission ;)

btw, I think the \.jar line has no effect, as only host will get matched

per en.wikipedia.org/wiki/MediaWiki:Captcha-addurl-whitelist

it seems that the lines should not begin with \, rather \b, as word boundaries, for matching domains.

now it shows error message each time captcha is shown ;(

and I think error/warning messages should be turned off now, as no need to debug anymore

or it will cause precious information to be leaked.

Done