* 🌐 Complete the German (de) translations (iTop 3.3)
German was incomplete in ways that the `~~` marker alone does not reveal.
This pull request:
- translates 317 entries that still carried the `~~` fallback marker
- fills 265 descriptions that were empty while the English entry had text
- adds 69 keys that existed only in the English dictionary
- updates 57 entries that still mirrored an older, much shorter English wording
- restores 8 broken printf placeholders
- adds 3 German dictionaries for modules that shipped none
English source strings and dictionary keys are untouched; only German values
change. Each printf placeholder was checked against its English entry.
* 🌐 Translate the new welcome popup entries (iTop 3.3)
Follow-up to the develop merge: translates the new `330_05_Portal` title and
description, extends `330_01_Welcome` with the sentences added upstream, and
restores the German wording that the merge had reverted to English for
`330_01_Welcome:Title`, `330_02_AIFoundations:Title` and
`330_04_MFA:Description`.
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Co-authored-by: Molkobain <lajarige.guillaume@free.fr>
