Instead of deleting devices that are not returned in the device list,
set an `active` flag, so that we don't remove the trust setting.
Set deactivated devices to `active` when a receive an OMEMO message from
it.
Also, set omemo_supported to true when we've succesfully decrypted a
message.
- Combine all test init functions into `initConverse`
- Use `async` functions in more tests
- Replace `var` with `let` and `const` in more tests
- New utils method `toStanza` which converts a string to a Node
When OMEMO isn't possible, render it as grey.
This change makes OMEMO for MUCs easier, since there I anticipate that
OMEMO support might change dynamically based on who enters/exits the
room.
updates #1180
`toLocaleString` now returns element attributes in alphabetical order
(for better cross-browser consistency).
Also, `toLocaleString` is now used in favor of `outerHTML` because
browsers aren't consistent with one another in their output.
When receiving a PreKeySignalMessage, then a prekey has been chosen and
should now be removed from the list of available prekeys in the bundle,
so that a different device doesn't choose it as well.
AFAICT, libsignal removes the prekey, so it's then up to us to
regenerate it and republish our bundle.
updates #497
Before these changes, prekeys were stored in two places, one place that
converse-omemo accessed and one that libsignal accessed and when
libsignal deleted a prekey the other store wasn't updated.
Now we let the methods called by libsignal store/remove prekeys (and the
signed_prekey) in the same place as used by the code in converse-omemo.
Instead of setting `active` to `false`, we remove the device entirely
(unless its the current device).
Doing it this way means more fetching of bundles for devices that
disappear and then reappear from a user's devicelist.
However, there might be caching invalidation concerns with just reusing
a cached bundle for a device id that disappeared and then reappears.
Additionally this change simplifies the showing of a contact's device
fingerprints in the modal, since we don't have to take active/inactive
into consideration.
updates #497
