Fix problems in regus.jst where we were not registering the US region chrome package.
Adjust how we handle the LICENSE file so it ends up as a .txt file when the user installs the app.
Register as a default news handler, including all of the news protocols into the windows registry.
Make offline a component in the component list for a customized install
Add packaging information for unix to copy over just the libraries and chrome files we need from dist\bin into dist\thunderbird like the windows build currently does.
This signifcantly reduces (by almost 1.9MB) the download size on unix.