Fix the German translation

[erazortt]

Preliminary checks

• I've checked that there aren't other open issues on the same topic.

Describe the problem requiring a solution

I have gone through the whole German translation file comparing every entry with the strings inside my original HEROES2.EXE file. I have not taken the strings from the original version blindly however, since at times your current translation was clearly much better. I chose for each string the "best" representation. "Best" can of corse be subjective, however sometimes, the translation was quite bad, and at times even almost unintelligible. In these cases I took the english version as a guide.

Most notable change besides that is that the player is now consistently addressed by the 2nd-person-plural form. There was a weird mix of this form and the 3rd-person-plural form, which was throwing the player out of the lore atmosphere.
I decided to go with the 2nd-person-plural form since this is typlical in German for anything with a medieval theme and for fairy tales. Corresponding movies are also always translated like that into German (Game of Thrones, Lord of the Rings,...).

PS: this issue supersedes #7848

Describe the possible solution

Use this file to update the existing in the repository: de.zip
Merge the pull request #7865.

Additional info

The changes were based on the most current revision of the file (70a635a)

[erazortt]

I created a pull request. So the zip file should not be needed anymore.

[ihhub]

I am closing this issue as it is an improvement over the existing translation and we have a list of open PRs for this.