Changes for 2.031 -> 2.032

LICENSE CHANGE
   UnPlug has changed it's license from the GNU General Pubic License (v2 or
   later) to the GNU Affero Public License, version 3 or later. This license
   also applies to rules.xml. See http://www.gnu.org/licenses/ to read the
   full license.

Display (pop.js/pop.xul)
 * Change how we save files with DownThemAll. File locations are set with the
   firefox FilePicker dialog, and take advantage of the improved filenames
   we suggest.

Search.js
 * Use a small delay when rules are marked with "defer" so we don't block so
   long when applying some slower rules.

Rules.xml
 * Search for things like ".flv" and ".mp4" in quotes anywhere on page.

Translations
 * Small fix to avoid backslash-escaping of utf8 characters