Reflector Devlog 6

This was a pretty light week, with just a few small UX improvements.

Here's what's new:

• Remember the last direction you were aiming when activated laser
• By default, no longer jump over invalid locations when placing reflectors or buildings
• Show red border when current target location is invalid
• Hold shift to jump over invalid locations
• Added ability to remove single reflector (instead of only having ability to remove all reflectors)
• Added support for moving with numpad