E2 Editor: Blocked typing backquotes
The key is the default open console button, and has no use in E2
If you for some reason want to write it in a string or something, copypaste it
E2 Editor: Optimized EDITOR:MovePosition
This is inherently a really slow function on large E2's, but now its 50% faster
E2 Editor: Heavily optimized double click word highlighting
This lowered cputime during a highlight in a 300kb E2 from 2 seconds to 0.02s
Fixes #445