grim/talkatu

Replace xvfb with broadway in the test wrapper

2020-09-05, Gary Kramlich
c479d9b87420
Replace xvfb with broadway in the test wrapper

Use broadway as our test wrapper since xvfb isn't everywhere and is a pain.

Testing Done:
Ran the build images for fedora 32 and debian bullseye locally, still waiting for the images to be built and pushed to docker hub.

Reviewed at https://reviews.imfreedom.org/r/105/
# Talkatu
![logo](logo.png)
Talkatu is a collection of Gtk+ widgets that are useful for chat applications.
It was started as a rewrite of the GtkIMHTML widget found in Pidgin, but
quickly expanded to include most things related to conversation windows.
This is highly experimental right now and might eat babies, we're not sure
yet. So proceed with caution :-D
## Name
The name is a pun of talkatoo from Super Mario Odyssey which just so happens
to also say "talk at u" :-D
## Dependencies
Currently Talkatu depends on
* glib-2.0 >= 2.40.0
* gtk+-3.0 >= 3.10.0
* gladeui-2.0 >= 3.0.0
* gspell-1 >= 1.2
* gumbo >= 0.10
* libcmark
## CI
You can find out the status of the talkatu builds on
[Bamboo](https://bamboo.pidgin.im/browse/TAL-TAL).
## Internationalization
All of our internationalization work is done via the
[Talkatu](https://www.transifex.com/pidgin/talkatu/dashboard/) project under
the [Pidgin organization](https://www.transifex.com/pidgin/) on
[Transifex](https://www.transifex.com). If you would like to contribute
that's the place to do it.