Bug 968480 - addon-page testaddon: TypeError: document.defaultView is null
Bug 990762 Remove deprecation in content scripts for global 'postWorker'
so that the native 'window.postWorker' can communicate to other windows.
Remove tests for postMessge wrapper proxy (fails due to global proxy
that is a separate concern in bug 996208)
Merge pull request #1457 from jsantell/990762-window-postmessage-in-cscripts

Bug 990762 Remove deprecation in content scripts for global 'postWorker'... r=@ZER0
Bug 949818 Intermittent attempt fix for when installing corrupt addons, check an error set on the AddonInstall instance before setting up listeners.
Merge pull request #1415 from erikvold/968480

Bug 968480 - addon-page testaddon: TypeError: document.defaultView is null r=jsantell
Merge pull request #1459 from jsantell/949818-addon-installer-intermittent

Bug 949818 Intermittent attempt fix for when installing corrupt addons, r=@mossop
Bug 994213 - Intermittent test-page-worker:testRedirect timeouts
Bug 980714 - Blinking caret in panel text

- removed `showcaret` attribute
Merge pull request #1464 from ZER0/panel-caret/980714

fix Bug 980714 - Blinking caret in panel text r=@gozala
Merge pull request #1463 from erikvold/994213

Bug 994213 - Intermittent test-page-worker:testRedirect timeouts r=jsantell