Remove trailing whitespaces

Conflicts:
	library/Zend/Cache/Storage/Adapter/Redis.php
	library/Zend/Crypt/FileCipher.php
	tests/ZendTest/Crypt/FileCipherTest.php
	tests/ZendTest/Crypt/Symmetric/Padding/NoPaddingTest.php
Merge branch 'hotfix/#6487-trailing-spaces-removal-hotfix'

Close #6487