Merge pull request #5752 from jmleroux/patch-2

Get an abstract defined service from an alias
[#5752] CS fixes

- multiline comment formatting, trailing whitespace
Merge branch 'hotfix/5752'

Close #5752
Fixes #5535
Merge branch 'hotfix/5752' into develop

Forward port #5752
Merge pull request #5754 from adam-ja/hotfix/gz-decompress

Fixed gz decompress check for false
Merge branch 'hotfix/5754'

Close #5754
Merge branch 'hotfix/5754' into develop

Forward port #5754
Merge pull request #5746 from fabiocarneiro/master

Remove hydrator from collections
Merge branch 'hotfix/5746'

Close #5746
Merge branch 'hotfix/5746' into develop

Forward port #5746
Merge pull request #5636 from saltoledo/form-collection-fix

Fix for the implementation of Collection Element
[#5636] Re-add removed file

- To retain BC with existing code that implemented it. Marked as deprecated.
Merge branch 'hotfix/5636'

Close #5636
Fixes #4094
Fixes #5010
Fixes #5640
make 'listeners' key can be configured outside application.config.php
because in ZF2 Skeleton App use : Zend\Mvc\Application::init(require 'config/application.config.php')
fix non context $this
use array_merge application config with other config to avoid bc
only merge with key 'listeners'
enhance variable name and precedence merge
Merge branch 'hotfix/5636' into develop

Forward port #5636

Conflicts:
	library/Zend/Form/Element/Collection.php
	library/Zend/Form/Fieldset.php
Merge pull request #5623 from gammamatrix/patch-2

Adding attributes to fieldsets. Legends are optional for fieldsets.