Fix German translation of panel context menu (addendum).
Fix German translation of panel context menu (addendum).

Counterpart to lxde/lxqt-panel@1ba4e7397 regarding the language-specific / country-agnostic "de" file.
Unnecessary split into two commits due to misunderstandings regarding the availability of pootle.lxde.org.

lxde/lxqt-l10n