Fix tab switching for Linux

The 'key' that registers is different for 'å'

Use shift instead of alt for tab switch toggle

Alt is more complicated to use on Linux when using a keyboard with
lv3:alt_switch.

Fix keyCode overlaps in tab switching

Some keys have the same keycode, notably 222 == "ä" == "'", update the
patch to not trigger for "'".

Push to both remotes

Save complete build log

Update to FIREFOX_NIGHTLY_139_END

No need to install gulp globally

Bump Linux version

Tip on patching