This cause the error "Mismatched anonymous define" when loading the
bundle in Plone.

The original reason for adding `start.frag` was to wrap the bundle in a
closure to not pollute the global namespace (e.g. overriding global
`define` and `require` with Almond`s versions) and secondarily to allow
people to load the bundle via require.js.

The second usecase should now probably be done via a shim in the
require.js config.

* Translated using Weblate (German)

Currently translated at 94.0% (268 of 285 strings)

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

* Translated using Weblate (Chinese (Traditional))

Currently translated at 35.7% (102 of 285 strings)

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

* Translated using Weblate (Russian)

Currently translated at 60.3% (172 of 285 strings)

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

* Translated using Weblate (French)

Currently translated at 100.0% (285 of 285 strings)

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

* Translated using Weblate (Portuguese (Brazil))

Currently translated at 90.5% (258 of 285 strings)

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

* Translated using Weblate (Ukrainian)

Currently translated at 60.3% (172 of 285 strings)

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

* Translated using Weblate (Dutch)

Currently translated at 100.0% (290 of 290 strings)

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

* Translated using Weblate (Turkish)

Currently translated at 0.3% (1 of 285 strings)

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

* Translated using Weblate (Chinese (Simplified))

Currently translated at 30.3% (88 of 290 strings)

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

* Translated using Weblate (Norwegian Bokmål)

Currently translated at 94.1% (273 of 290 strings)

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

* Added translation using Weblate (Bulgarian)

* Translated using Weblate (Bulgarian)

Currently translated at 40.3% (117 of 290 strings)

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

* Translated using Weblate (Japanese)

Currently translated at 100.0% (290 of 290 strings)

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

* Added translation using Weblate (Arabic)

* Translated using Weblate (Arabic)

Currently translated at 71.3% (207 of 290 strings)

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

* Translated using Weblate (Spanish)

Currently translated at 95.1% (276 of 290 strings)

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

- Mention CSS file needed for embedded case.
- Update some outdated text

Instead do it in `_api.chats.create` which is specifically for private chats.