general
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- do periodical stuff on school servers, e.g., prolong ssl certs
- auto disable services if theirs deps are not installed
- import data in batch mode from usb
- realod configuration
- tweak HACKING to use sugaroid for tests

activation
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- (?) need to remember what delegated leasas were served
- rescueleases
- (?) activation via http

backup
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- gracefully reply if backup is disabled
