We recently set up a transifex account for all translations!
You will be able to enhance the russian version if your translators have the time to do it.
For the remote provisioning, it is actually possible through the wizard. It is the last option in the list that you are presented at first boot, and the provisioning file is a simple XML derived from the format of the LinphoneRC file.
An very simple example which should work for you:
<?xml version="1.0" encoding="UTF-8"?>
Just host an XML (or dynamically generate it) somewhere and send the URL to your user.
There's even an automatic provisioning URI on iOS (I'm not sure for Android): clicking a link that starts with: linphone-config-https:// will automatically launch linphone and provision the URL passed as argument.
For instance, you could send the user this link:
And if the user clicks on it from an email for instance, it will launch Linphone and grab the provisioning to set up linphone.