switch to vector.im permalinks as matrix.to isn't ready yet.
merge overlapping notifications together.
give one message of context after a notification (in the unlikely event it exists, but it's possible thanks to throttling).
include name of app in mail templates

until we can de-dup between the context and other notifs

In standard sql, join binds tighter than comma, so we were joining on the wrong table. Postgres follows the standard (apparently).

Fix password reset