Unlike with many other lists,
we are not clearing the list of private messages when restarting the activity.
We still load the messages from the database and add them to the view.
When there are no new message to add,
the usual insert observers do not trigger
and we do not call list.showData() although we should.
Doing so removes the progress bar as soon as messages have been loaded.

Add a LinuxTorPlugin

See merge request briar/briar!902

Use vanniktech emoji library

Closes #1343, #1314, #940, #930, #749, and #684

See merge request briar/briar!857

Avoid raw messages

See merge request briar/briar!906

Check whether getNetworkInterfaces() returns null

See merge request briar/briar!903

Minimise use of message constructor

See merge request briar/briar!905

Throw an exception if a deleted message is requested from the DB

Closes #758

See merge request briar/briar!904

Fix the database performance tests

See merge request !893

Log Tor relay names to detect failing bridges

See merge request !901

Use Material style for SwitchPreference on Android 4

See merge request !897

Show an error fragment when contact exchange fails

See merge request !890

Implement new empty state icons

Closes #1349

See merge request !898

Replace two failing bridges

See merge request !900

Refactor Tor settings and add a setting for forcing the use bridges

Closes #1269

See merge request !895

Use /dev/urandom for CI

See merge request !899

Screen Lock: Lock after customizable inactivity timeout

See merge request !887