Missing translation for some elements

[Hunam6]

There is no translation for:

• the "Close" and "Help" buttons in the settings menu
• the text "Testing area for changes that will become the next release" in the "Features" sub tab
  of the "MultiMC" tab of the parameters menu
• the text of the link "Help us with translations!" in the "Language" tab
• in the "Accounts" tab, the "Add", "Remove", "Set default", "No Deault" and "Upload Skin" buttons
• the "help" and "Cancel" button in the instance addition window

These translations are missing in French for example, whereas it is indicated that the French language has been translated 100%.

[peterix]

Yep.

Some of those come from Qt itself, and I'm not sure how to approach the problem, outside of customizing absolutely everything.

Some look like bugs.

Looking into it :)

[peterix]

"Help us with translations!" should now be fine.

[LasmGratel]

"Close" and "Help" buttons in the settings menu still remain untranslated, so do the title bar

[Scotsguy]

Qt provides translations for their elements, see https://doc.qt.io/qt-5/internationalization.html#locating-qt-translations