[Cleanup] Remove unused PHP namespaces

[SQL Upgrade script]Remove extra newline :)

"website" field has been removed from default unmodifiable `setInfoFi…

…elds()` fields

[phpdoc] Fix typos

[Refactoring|Readability] Split code from switch stm into their own f…

…uncs

[FIX pH7Software#487]Watermark,also available on Video album covers

Change `static::` to `self::`, because method is private

No need to use late static binding when the method is private (bit useless... :))

Replace hardcoded gender string to its GenderType constants

[Postgres Core.sql] Fix wrong string digits

Update & Cleanup global.po file