MediaWiki messages missing from translatewiki.net Echo and Upload form

"Browse..." and "No file selected" Yes, these words have on Russian was also looking for a message but did not find.

Sorry, aber nichts ist übersetzt (Stunden, Tag, Monat, Jahr) dieser Wörter

Have you tried Special:SearchTranslations? Have you tried to tell Special:Translate to show you also optional messages?

Yes tried. That's what I translated Wikimedia:Commons-ios-reltime-hours/ce Wikia:Timeago-hour/ce Wikia:Timeago-hour-from-now/ce MediaWiki:Hours-ago/ce MediaWiki:Centralauth-hours-ago/ce MediaWiki:Centralauth-days-ago/ce Wikia:Timeago-day-from-now/ce Wikia:Timeago-day/ce MediaWiki:Centralauth-months-ago/ce Wikia:Timeago-month/ce Wikia:Timeago-month-from-now/ce MediaWiki:Centralauth-years-ago/ce Wikia:Timeago-year/ce.

These messages are not translated.

Please see these words, we are still in the Russian I translated wherever found how to fix it?

What did you see when you added &uselang=qqx to this page?

"Browse..." and "No file selected" are not part of MediaWiki, so they are untranslatable.

Untranslateable messages on Special:Upload reported on bug 56813.

"Browse..." and "No file selected" are part of browser's implementation, so we can do nothing about it...

Unfortunately, this message is for Russian, go to this link.

Japanese has the same problem. That has nothing to do with "Browse..." and "No file selected".

The issue with the "time ago" messages in the notifications extension is being investigated - see Thread:Support/The_time_phrase_in_Mediawiki_gadget_Echo and bugzilla bugzilla:54731.