Allow data editing for & responses to support tickets

[Struck713]

Done:
figure out why email live queries are so slow... (is it doing polling for some reason?)
and figure out how to get replies from the khe server recognized as such by outlook/gmail/etc
reset message fields after sending one (quill controlled component complications?) (subject line does not even update when switching threads 😅)
html from received incoming emails seems to get escaped somehow
received messages populated from live queries seem not to ever get marked as read; does that only happen when switching to specific threads? it could happen in the initial useEffect for the displayEmail component, right?
add links to message alerts
scroll to bottom of thread upon navigating to it
add badge to support tickets tab itself
and allow the rest of the support ticket fields to be edited

Do someday:
add loading spinner for sending emails - ideally would be able to get "outbox" status from sendgrid
add "references" headers to alerts
add ability to manually create new ticket from support ticket page - this would be the only way to send emails to a new address as things stand
handle attachments.
quotes in replies...

test all of the above.