Use folder-hooks to set alternates per-mailbox so identities don't overlap.
This prevents mutt from thinking you're replying to yourself when both
sender and recipient are in your various email domains.

Switch from pass to rbw for retrieving the c-base mail account password.

Allows HedgeDoc editors to maintain focus when clicked, fixing the issue where text input was interrupted after 1 second due to Tridactyl blocking autofocus attempts.

Using the stable system path instead of a hardcoded store path means
BROWSER automatically points to the current system's firefox after rebuild.