Fixes Microsoft/monaco-editor#127: Set the font on the canvas context correctly, add an extra 2px for Japanese

Fixes #11474

Appveyor: show output also for normal unit tests

Fix Terminal.show preserveFocus parameter

Fixes #11276
Fixes #11214

Fixes #11325

Fix terminal exception when create new is called on uninitialized panel

We're sticking with simple for now, an overload can be used if a config object
is necessary later.

This reverts commit 873b3d0b.

Fixes #11377