Added popup windows handling support to core driver and sessions
Changed driver's method name for prompt input
Fixed typos in comments
Fixed messages for expectation exceptions
Fixed tests
Popup methods are renamed to Dialog
Added popup windows handling support to core driver and sessions
Changed driver's method name for prompt input
Fixed typos in comments
Fixed messages for expectation exceptions
Fixed tests
Popup methods are renamed to Dialog
Merge remote-tracking branch 'refs/remotes/origin/develop' into develop

Conflicts:
	tests/Behat/Mink/SessionTest.php