Add build of Zotero translation server

This includes all the library binaries from xulrunner-sdk needed
to run Zotero. xulrunner isn't packaged in Ubuntu any more (but it
is in Debian), and Zotero breaks with the latest version of xulrunner
so I built it with version 29.0.

Change-Id: I595522897e10bd9c1585c19a36cead134aa6f278
Merge "Add build of Zotero translation server"