Allow other modules to provide styles for Deep Chat

I tested it locally and the code works.

Thanks guys - looks good, I also added so it checks the themes. I will merge this with 1.1.x-dev for the first 1.1.0 release.

Uploading the patch, so that it can be used until the stable version is released.

Updated patch, something wrong was with previous one

Automatically closed - issue fixed for 2 weeks with no activity.