disabling private-browsing tests
(cherry picked from commit 25cfa4813e1409e68497cba427aa10f9c4832741)
Update Firefox/Fennec min/max versions for the new releases.
added system/events.md
Fix bug 749772 -  Hotkeys documentation should give some guidance about acceptable hotkeys; r=@mossop
Merge pull request #699 from wbamberg/llapi-cleanup

Fix for bug 823740.(cherry picked from commit 61835812eb8ab8dee7c9bacb02e208e9829942d7)
Merge pull request #704 from ZER0/mobile-list/807277

Bug 807277 - Update the list of modules currently supported by Fennec(cherry picked from commit f8381fd23b05868deef7b90de8a607a1a835038e)
fix for bug 827614 - FAIL: test_generate_static_docs (cuddlefish.tests.test_generate.Generate_Docs_Tests); r=@mossop
Merge pull request #725 from brettz9/doc-module-require-fix

Fix apparent documentation bug with module requiring(cherry picked from commit eacb7971676fdf8d856eb0e7d0494d3998324f73)
Fix for bug 826406 - Updating widget.contentURL breaks communication between content script and main; r=@erikvold
Merge pull request #713 from wbamberg/823928

Fix for bug 823928: the examples are not reflecting the new layout changes(cherry picked from commit 06c99651d2c78330cc87e090aa9184688bc3d7c3)
Merge pull request #707 from wbamberg/784865

Address review comments, and fix bug 784865: document the `system` module(cherry picked from commit 6d3b0f16f8263511eab30575147e7c6411982955)
Merge pull request #701 from wbamberg/821774

Fix for bug 821774(cherry picked from commit b323148c9d12ac637a6d70af91ce1481ebd7f9c3)
Merge pull request #730 from wbamberg/cherrypick-docs

Cherrypick improvements to docs to stabilization.
adding a test for bug 804935 window.tabs dne error
(cherry picked from commit b0a85503f5620de2413b971f89ebd0548d783e33)
Merge pull request #729 from Mossop/bug831643

Bug 831643: context-menu image missing when using SDK > 1.12(cherry picked from commit 5eabf48bb4d3b4555f3806fd98dca99188f33d99)
Merge pull request #720 from erikvold/804935

Bug 804935 window.tabs is undefined r=@zer0(cherry picked from commit a722b820818aa631ae81446e5322cc264f083590)