bug 1089238 - use test/httpd to simulate readyState timings
Merge pull request #1685 from zombie/1089238-testContentScriptWhen

bug 1089238 - use test/httpd to simulate readyState timings, r=@erikvold
bug 1090147 - switch tab.attach to use async Worker
Merge pull request #1690 from zombie/1090147-tab-attach

bug 1090147 - switch tab.attach to use async Worker, r=@Mossop
Bug 1077372 - When a jpm add-on depends on addon-pathfinder then jpm test fails to run the pathfinder tests r=jsantell