~mozillateam/firefox/firefox-beta.wily

* Refresh patches
  - update debian/patches/support-coinstallable-trunk-build.patch
  - update debian/patches/unity-menubar.patch
* Remove obsolete configure options from debian/config/mozconfig.in
* Drop gstreamer build dependencies - gstreamer support was removed
  before Christmas
* Drop everything related to the webapp runtime, which has been removed
  - update debian/firefox.dirs.in
  - update debian/firefox.install.in
  - update debian/patches/series
  - remove ebian/patches/webapprt-support-for-langpacks.patch
  - update debian/rules
  - remove debian/vendor-webapprt.js
* Add patch to revert an upstream search engine change
* Add ICU data file to the install