Revision of https://github.com/odoo/odoo/commit/02ec09cb1c3e2d7bc7968f40c18f2208d7f3f498
One of the purposes of the previous commit was to test discuss.
There was an attempt to test im_livechat, but it has been aborted due to the possibility
to use livechat on an external website.
However, some bits remain from this attempt, such as LivechatButton becoming a JS service
provider in order to use those services with the external lib. LivechatButton was not working
for the following reasons:
- ServiceProviderMixin.init was not called (so it couldn't load any service);
- On website, there are two service providers (LivechatButton & websiteRootInstance).
This fix ensures that LivechatButton does not rely on JS services, such as the bus_service.
Alexandre Kühn
8b9e854be4