hybridauth 7.x-2.1

Added tokens support to destination setting (redirect after login).
Fixed #1835820: HybridAuth library also needs php5-curl - HybridAuth library requires php-curl; added to README.txt
Fixed #1835840: HybridAuth ignores registration account settings - honor the site settings on who can register and approve new user accounts
Integration with e-mail address verification setting - if auth provider gives not verified e-mail address we will ask to verify it.
Add identity to existing account with the same email only if auth provider gives emailVerified property.
Added settings for account creation and e-mail verification policies -either follow core settings or override for users created by HybridAuth
Added required fields functionality - if value is not returned by auth provider we will present a form to fill required values.
Refactored delete identity form submit handler.
Refactored exceptions handling and watchdog reporting stuff.