This is both lighter, looks better when rendered at arbitrary
resolutions (as there is no scaling being done), and actually editable
for different deployments.

This image has been hand-drawn using the PNG as a background.

fixes #1264

Also...

- hide the badges in overlayed view mode
- hide the features list in overlayed view mode

Currently translated at 73.7% (261 of 354 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/nb/

Currently translated at 99.4% (352 of 354 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/fr/

Currently translated at 99.4% (352 of 354 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/fr/

Update from Weblate

Currently translated at 99.7% (346 of 347 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/cs/

Currently translated at 100.0% (347 of 347 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/hu/

Currently translated at 63.4% (220 of 347 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/nb/

Currently translated at 98.8% (343 of 347 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/fr/

Currently translated at 87.0% (302 of 347 strings)

Translation: Converse.js/Translations
Translate-URL: https://hosted.weblate.org/projects/conversejs/translations/ar/

Fix #1252, incorrect bookmark icon title

Fix make help

Async await

Otherwise we get an unwanted horizontal scrollbar

* src/converse-controlbox.js

    async/await causes many tests here to fail due to the controlbox toggle
    now apparently showing up a little later (and the tests don't wait for
    it to happen).

* src/converse-minimize.js

    We get timeout issues in tests.

* src/headless/converse-chatboxes.js

    We get a stack overflow while running tests.