Do not change element object during extract
Fix whitespace
Merge branch 'hotfix/3328'

Close #3328
Close #3269
Fix #3195
Merge branch 'master' into 2574
Add unit tests for Collection element extract
Fix CS
Merge branch 'hotfix/3081' into develop

Forward port #3081

Conflicts:
	library/Zend/Form/Element/Collection.php
	tests/ZendTest/Form/Element/CollectionTest.php