00478e2466
Admin-facing simplification:
- Dropped separate \"lookahead\" and \"historical lookahead\" tree
prefs (and the once-per-month historical gate). A single
\"send every N days\" number now drives both the cron cadence
and the window each issue looks ahead for living + deceased
events.
- Default 14, range 1–90, applies uniformly.
User-facing addition:
- The /my-account/{tree} subscription card gained an \"Email
frequency\" select with options: use site default, weekly,
every 2 weeks, monthly, every 2 months, quarterly. Stored as
a per-tree-per-user preference.
- Dispatch now checks each recipient's own cadence against
their own last-sent timestamp. Admin-added external addresses
with no webtrees account always receive every run (no
per-user state).
- Newsletter footer now reads \"You can change how often you
receive this email, or unsubscribe entirely, in the Newsletter
subscription section on your My account page\" — true now
that the control exists.
German translations updated for the new strings; stale ones
removed.