Update WoW Plugin to build 19034

Update WoW plugin, including switching to 128-bit GUIDs, which I've
naively done with a structure containing two 64-bit integers instead.
There's probably a nicer way to do this.
Update Opus to version 1.1.1 beta

Fixes #1439
Fix crash on Linux when trying to configure shortcuts.

Trying to set a push-to-talk key Xlib functions were
called before the display and thus Xlib functions being
initialized, leading to a crash concerning /dev/input.
Debug output:

 #0  XKeycodeToKeysym (dpy=0x0, kc=50 '2', col=0) at ../../../src/xkb/XKBBind.c:111

This patch calls XOpenDisplay() earlier to avoid this.

Fixes #1250
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Fix Qt 5 transition bug making certificate wizard access out of bounds.

Unfortunate typo which made us access empty string instead of the
guaranteed non-empty list we wanted to fill the string from.
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