[#30810] Disabled ReCaptcha For New Installs

TrackerCodeItem:
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=30810

This pull request disabled the recaptcha plugin for new installs for mysql, postgress, and sqlazure.

Bug report submitted by Tim Kramer at:
https://github.com/joomla/joomla-cms/issues/775

[quote from Tim]
By default the recaptcha plugin is enabled and has no API key supplied.
Therefore anytime any component, plugin etc. calls the recaptcha plugin, it
throws a 500 error and crashes rather than throwing a notification.

Probably the better idea is to disable the recaptcha plugin by default, and
when people enable it they can then supply the keys required.
[/quote from Tim]

There's a pull request for just mySQL submitted by David Hurley and tested by
Peter van Westen at:
https://github.com/joomla/joomla-cms/pull/793

however, it needed the other databases as well.