Merge branch 'hotfix/#6398-forward-controller-plugin-fluent-interface-consistency'

Close #6398
Fix documentation
#6895 - `Zend\Log\Processor\Backtrace#getBacktrace()` returns an `array` of `array`s
Merge branch 'hotfix/#6895-correct-log-processor-get-backtrace-return-type'

Close #6895
Merge branch 'hotfix/#6895-correct-log-processor-get-backtrace-return-type' into develop

Close #6895
Forward port #6895
parseUserInfo removed from getPassword and getUser
isValid override removed
building userinfo by user and password
trailing spaces removed
#6886 - simplifying logic, minor CS and docblock fixes
#6886 - adding `@group` annotation to newly introduced tests
#6886 - `assertSame` over `assertEquals`
#6886 - typo fix (useless assignment caused by copy/paste)
#6886 - should allow null user and password being set
#6886 - should allow null userInfo fragment
#6886 - setting `null` `userInfo`, `user` or `password` should be reflected in internal object state
Merge branch 'feature/#6886-zend-uri-http-password-support' into develop

Close #6886
Fixes CS : unused use
Merge branch 'cs/#6629-remove-unused-code'

Close #6629
Merge branch 'cs/#6629-remove-unused-code' into develop

Close #6629
Forward port #6629