Fix for issue #215

This fixes the issue with the test page--I went through all the other
uses of curl in the project, and usually it makes calls to external
APIs, not local things. I wasn't sure what the use case for the curl
call in Utilities.php was, but I added a user agent there as well in
case it ever gets used to call anything local.
Also, I closed the curl session twice in test.php--looks like that was
left out (although it's not a big deal).

Wasn't sure what to use for a user agent, so I chose an old standard.
Any user agent would have fixed the issue, however.
Merge pull request #217 from compilingEntropy/respond3dev

Fix for issue #215. Thank you.
fix recaptcha reference
Merge branch 'respond3dev' of https://github.com/madoublet/Respond2 into respond3dev
Add headline & button to slideshows, class and ID to slideshows and galleries
Merge branch 'respond3dev' of https://github.com/madoublet/respond into respond3dev
removed page is still in search result #211
Files Tools Problem #207
Merge pull request #214 from axis80/respond3dev

Change Add Menu Item button to same style as other pages
Merge branch 'respond3dev' of https://github.com/madoublet/respond into respond3dev
Merge branch 'respond3dev' of https://github.com/madoublet/respond into carouselsplit
Merge pull request #218 from axis80/carouselsplit

Add class / id to slideshows and galleries, headline/button to slideshows
Merge branch 'respond3dev' of https://github.com/madoublet/respond into respond3dev
Add slide pagination indicators to carousel