Gets rid of the Column extends Element hack and paves the way for error messages
and other things.

Right now renders using a GridLayout which means all columns are the same width.
No horizontal scrolling or becoming not-a-table for many columns, so big tables
will be a disaster.  Does render and work though.

The strategy here is to actually make each cell an "item" in the RecyclerView
instead of each row being an item.  Then the layout manager takes care of it.
This means that the end-of-row-ness is just because of column count, and not
actually enforced at all.  It also means that as currently built if any row has
a missing field it'll mess up the whole thing.

No type directed rendering or anything yet, just dump it out.

These don't make any sense to send to us, but in practise biboumi does and
expects us to ignore it.

Spec says that actions must be specified if there are any.  In practise, at
least biboumi violates this and sends back no actions at all but is in
"executing" state meaning it expects a next stage.  So in this case we should do
something smarter than assuming we're all done.  Put up a button for the
execute/default action.

And really hide it, even swipe should not work to get to the blank page

Otherwise it gets confused and blanks itself out.

If status is completed or canceled and there are no children, then there's
nothing more to say so just remove the session.

Instead of a single "done" button, show all available actions in the footer,
each in a different color (generated the same as avatar backgrounds, etc) with
the action name translated if a translation is available.

The pseudo-action "close" is for when a command is already completed.  In this
case, the execute() call will see that the session is already completed and it
will be removed without actually checking the action string at all.

The RecyclerView doesn't put consistent space between our elements, so we need
to make sure to but consistent bottom padding on them.

Depending on the fragment lifecycle, onCreateView and onStart may both be called
before the backend is connected, and so there will be no conversation yet.
Instead, do the conversation-needing initialization here in reInit where we know
we have it.

Does not handle reported/item tables yet, or fillable forms.

Otherwise assume the single item can handle scrolling itself.  Otherwise
single-item view with a scrollable child breaks.

The first element that we support. In this case, the first note.

If user manually selects a tab, remember that.

If a JID advertises commands, list them.

This only works if the JID supports CAPS and is in our roster and we have
already fetched CAPS for the resource.

* xmpp-uri-notification:
  Get XMPP URI names from bookmarks as well
  Show nicks for links in notifications and other message previews

* unify-link-copying:
  Use the same mechanism for link copying and linkification

Prevents copying something different from what was linked, such as in the
message "fine.gif https://example.com"

* tag '2.10.9': (25 commits)
  version bump to 2.10.9 + changelog
  set immutable flags for backup notifications
  skip empty uris on attach
  pulled translations from transifex
  do not retrieve media attributes from encrypted files
  make launch conversation and launch tor pending intents immutable
  pulled translations from transifex
  pulled translations from transifex
  do not accept empty credentials as ice-restart
  add immutable flag to pending alarm intents
  add migration tutorial
  Fix typo
  try to detect if a container contains video or audio
  request bluetooth connect permission
  add permission checks to appRTCBluetoothManager
  bump targetSdk to 32
  ignore race condition after reject from notification
  use threemas webrtc build (trial)
  upgrade okhttp
  remove null bytes from strings before creating sql statements in backup
  ...

Two of the recommended plugins got merged in 1.4, and don’t exist any longer,
and when using flatpak the plugins must be installed that way.

For easy access to basics like pin to top or disable notifications