Task #446 #398: synchronize composer.json and ext_emconf

[kartolo]

resolve #446 #398

[kartolo]

@baschny: please take a look. thanks.

[baschny]

That looks great, @kartolo thanks!

But if jumpurl is only "suggested", this should be noted in the documentation that this is required if you want to use the "click tracking" feature: https://docs.typo3.org/p/directmailteam/direct-mail/main/en-us/Configuration/EnablingClickStatistics/Index.html

In my opinion you could as well make it "required" and then the feature will work "out of the box" without needing to document anything further.

[kartolo]

Hint is added in documentation