Wrong license for Abrowser in /usr/share/doc/abrowser/copyright

2 years ago, Firefox's license was changed from the MPL1.1/GPL2/LGPL2.1 tri-license to MPL 2.0 (which is GPL-compatible). The copyright file for Abrowser still does not reflect this change. Also MPL.gz still contains MPL 1.1.

The Ubuntu packager for Firefox will not work on this (https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1028266).

The complete list of licenses can be found by going to about:license in Abrowser.