When no decryption or signature examination is
happening (i.e. `notmuch-crypto-process-mime' is `nil') insert buttons
that indicate this, rather than remaining silent.
This requires changing the contents of the crypto tests, as one thread
that was marked read by the earlier tests in test/emacs is no longer
marked read.
This moves tests for:
- 09d19ac "test: emacs: toggle eliding of non-matching messages in
`notmuch-show'", which should have actually read: "test: emacs:
toggle processing of cryptographic MIME parts in `notmuch-show'".
See commit 19ec74c5.
- 5ea1dbe "test: emacs: toggle eliding of non-matching messages in
`notmuch-show'"
- 345faab "test: emacs: toggle thread content indentation in
`notmuch-show'"
Signed-off-by: Ethan Glasser-Camp <ethan@betacantrips.com>
