[#1032] Advanced settings

[LukasKorba]

Closes #1032
Closes #1033

• all buttons moved to appropriate positions and screens
• business logic rewired
• all new texts localized
• changelog updated
• unit tests fixed

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Author

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Reviewer

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• Documentation: Did you review Docs, README.md, LICENSE.md, and Architecture.md as appropriate?
• Run the app: Did you run the app and try the changes? While the CI server runs the app to look for build failures or crashes, humans running the app are more likely to notice unexpected log messages, UI inconsistencies, or bad output data.

[str4d]

utACK 0cf120b. The first commit in the PR I reviewed in #1044, and IDK what the second commit is for (it has the same commit message as the first, but seemingly unrelated changes). Standard disclaimer that I Am Not A Swift Or iOS Developer.