Added "tel" and "email" input type guessing.

Refs [#3557](http://cakephp.lighthouseapp.com/projects/42648/tickets/3557-input-typeemail-for-email-fields)

I am on the fence regarding using "url" type guessing as it does validation for absolute url which might not always be desirable. I believe it's common usage to not require end users to enter absolute urls.