Add German hotspot translations for DWDS

[BPerlakiH]

We need the following label translated to German for DWDS release (in traslatewiki):

"enum.navigation_item.hotspot" = "Hotspot";

Ideally we should have every missing piece translated:
https://translatewiki.net/w/i.php?title=Special%3ATranslate&group=kiwix-apple&language=de&filter=%21translated&action=translate

For DWDS we can possibly omit the ones related to downloads.

[kelson42]

Hotapot is Ok in German, nobody cares IMHO.

[BPerlakiH]

The issue is that we are enforcing German for DWDS and we don't fallback to English (as English is not even included in that build). Therefore we need those translations, otherwise we have this:

[kelson42]

@BPerlakiH I have translated the most important on Translatewiki. That shoudl allow you do copy the translations ans make a DWDS Testflight release straigth
@haoess @gremid Can you please check/complete my work in Translatewiki?

[gremid]

Done.

[kelson42]

@gremid We will wait the next iteration of TW bot and merge your work.

[BPerlakiH]

Next iteration has been merged. Good to close this issue.