Add university of saarland to known domains

fix: update mbsync call for macos

in accordance with #694

added new domain

add ik.me domain

Signed-off-by: Nicolas Serafini <serafini.nicolas@gmail.com>

This reverts commit c95428f0f1.

add uni.strath.ac.uk

Update UPMC/SU email address configuration

These might need STARTTLS explicitly disabled in the msmtp config file though

A user reports notifications not working on their setup because there is
no display id  contained in the `ps`/`pgrep` output  concerning the Xorg
process.

This commit checks if there's a display server running at all, and if so
it sends notifications even if there's no display id.

Resolves https://github.com/LukeSmithxyz/mutt-wizard/issues/661

Add ucsb.edu to domains.csv

Update domains.csv

Fix notifications on Wayland-based environments

remove old vars like pass_prefix, muttdir
reorder mailbox detection to find inbox case and later delim
offline delim set to _ which should avoid most issues