Members are shown according to cohort
One-sentence description
The current way of displaying members when you select all members, is by showing them on cohort order, while this should change to alphabetical order.
Why?
It is more clear when it is sorted on alphabetical order, instead of first sorted on Cohort order and then alphabetical order.
Current implementation
Currently, it is sorted on Cohort order, and then Alphabetical order, when selecting 'all members'. https://thalia.nu/members/
Suggested implementation
When selecting 'all members', it should be sorted Alphabetically immediately.