override getSqlString() is wrong
Merge branch 'hotfix/#7036-phpdoc-fixes-for-zend-mvc'

Close #7036
Merge pull request #7038 from turrsis/hotfix/db/sql/platform/remove-wrong-override

[Db\Sql\Platform\Mysql\Ddl] override getSqlString() is wrong
CS: join to implode
Merge branch 'cs/#7021-s-join-to-implode' into develop

Close #7021
.php_cs - add parenthesis fixer
library - apply parenthesis fixer
tests - apply parenthesis fixer
Merge branch 'cs/#7027-no-space-after-open-or-close-parenthesis' into develop

Close #7027
.php_cs - add method_argument_space fixer
tests - apply method_argument_space fixer
library - apply method_argument_space fixer
code grooming
Merge branch 'cs/#7029-no-space-before-argument-list-comma' into develop

Close #7029
Syntax error fix - in PHP 5.3, objects must be assigned/returned in order to be used after `new` operator usage
Merge branch 'hotfix/php-5-3-syntax-error-fix' into develop