* Add support for case where user has JavaScript disabled.

    * Override addCaptchaApi() with empty method to suppress useless
      generation of base class's math captcha

    * Remove check for cookies in help (because AYAH doesn't need them).
Update deprecated API functions per:

http://www.mediawiki.org/wiki/Manual:Messages_API#Deprecated_wfMsg.2A_functions
Fix help page message name
Update help text

(this is a PlayThru captcha, not QuestyCaptcha)
Merge pull request #1 from strixaluco/master

This looks great, thanks Strix