refactor: AddOpeningHours

[paulklie]

I refactored AddOpeningHours to make it more legible by splitting up filter into 3 filters:

• namedFilter, for most places, require name or brand
• unnamedFilter does not require name
• updateFilter only asked for resurvey

I did not change the functionality, but did update the comments.

Tested. Tests pass.

[westnordost]

• those are not filters, but filter fragments. the name should make that clear.
• no need for strings to be lazy

I didn't look at details otherwise