* More email share vars + unfinished placeolders config
{desc} {expires} vars
(unfinished) config placeholder vals
* done
* migrate
* edit seed
* removed comments
* refactor: replace dependecy `luxon` with `moment`
* update shareRecipientsMessage message
* chore: remove `luxon`
* fix: grammatically incorrect `shareRecipientsMessage` message
* changed to defaultValue and value instead
* fix: don't expose defaultValue to non admin user
* fix: update default value if default value changes
* refactor: set config value to null instead of a empty string
* refactor: merge two migrations into one
* fix value check empty
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Co-authored-by: Elias Schneider <login@eliasschneider.com>
