Code review comment for ~talkless/apparmor-profiles:thunderbird-mozilla-java-plugins

I see that abstractions/ubuntu-browsers.d/java has something about IcedTeaPlugin.so + other potentially useful stuff like access to /{,var/}run/user/*/icedteaplugin-*/, that I suspect we'll need for Thunderbird as well sooner or later. So how about including this abstraction instead?