If no options are passed but the accounts are specified then the blank opt flag causes a (harmless) error message from mbsync about an empy channel.

Co-authored-by: rjl6789 <rlives6789@gmail.com>

* Simple Fixes

* Tweak wording

* Update openfile

* ShellChecked

* Little Fixes

* Fix head: illegal line count -- -1

* Fix `osascript: display notification with title "📧 xxxx" subtitle "xxxx" : No such file or directory`

use kill instead of pkill for speed

This enables users to easily recognize notifications to be able to
modify or style them through notification daemons.

* line 5 defined the variable DBUS_SESSION_BUS_ADDRESS before exporting it in the next line

* change the pgrep line

* Revert "Update domains.csv (#321)"

This reverts commit a92c01e131.

* Revert "Revert "Update domains.csv (#321)""

This reverts commit af0c0826b9.

* Revert "line 5 defined the variable DBUS_SESSION_BUS_ADDRESS before exporting it in the next line"

This reverts commit ca64a6ae56.

* Revert "Revert "line 5 defined the variable DBUS_SESSION_BUS_ADDRESS before exporting it in the next line""

This reverts commit 4304eb731c.

This allows mailsync to be called like this `bindsym $mod+e exec --no-startup-id mailsync; exec $term -e neomutt && pkill -RTMIN+12 i3blocks` such that it refreshes your mail when you open mutt without it needlessly syncing if a sync is already running.

Resolves https://github.com/LukeSmithxyz/mutt-wizard/issues/197.

If -a is passed along with "$@", mailsync will sync all mailboxes even
if only a single channel is passed in with "$@". This breaks the
semantics of the `o` macro in mutt which should only sync the current
mailbox that is currently being viewed in mutt.