Merge branch 'master' into gfm

* master:
�� Rector and PHPCS fixes
�� Update deleted files
Make common_pageinfo tests independent of execution order
Translation update (sk)
chore: adjust o

Merge branch 'master' into gfm

* master:
�� Rector and PHPCS fixes
�� Update deleted files
Make common_pageinfo tests independent of execution order
Translation update (sk)
chore: adjust overlong line
fix(auth): scope media ACL checks to the namespace
refactor(search): extract LegacyIndexer wrapper for BC contract
Translation update (ro)
fix(authad): avoid warning when initAdLdap is called before opts is populated
fix(infoutils): fix synology os-release file parsing
remove valid_input_set(), inline the only remaining callers
Update copyright year in README
fix(mail): keep '&' intact in mailto links with multiple query params

# Conflicts:
# inc/Parsing/ParserMode/Internallink.php

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split Parsing\Helpers into per-domain Link / Media / Code classes