added newer Recaptcha2 class to deal with v2.0. Fixes #919

[niphlod]

Improvements over the "old" v1.0

• behaves well also without javascript
• use_ssl is redundant, v2.0 works only in https mode
• ajax is not useful anymore as the newer API is a lot easier

Adjusted also the addrow() method that was missing newer formstyles.

[coveralls]

Coverage decreased (-0.05%) to 35.42% when pulling 77f154a on niphlod:enhancement/919 into f3bda9a on web2py:master.

[mdipierro]

Do we have to call this Recaptcha2? can we replace the old one?

[niphlod]

widgets dimensions aren't the same: it'll break existing designs, although it won't break functionality. Moreover, arguments for the old one don't match the newer. We can recommend this over the old, but not replace it.

[mdipierro]

Can we expose a single interface that renders as one or the other depending on the arguments?

On Apr 26, 2015, at 1:34 PM, niphlod notifications@github.com wrote:

widgets dimensions aren't the same: it'll break existing designs, although it won't break functionality. Moreover, arguments for the old one don't match the newer. We can recommend this over the old, but not replace it.

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[niphlod]

Don't think so, sorry but they're too different.

[mdipierro]

OK. But eventually we should break tools into sub modules.

[niphlod]

you're preaching to a quire. Extrapolating recaptcha and recaptcha2 is by far the easiest sub-task in the great project of breaking tools.py.

[mdipierro]

I think each class in tools is its own universe. They do not depend on each other.