Quality of life improvements

- Pinning should now work better. Your pins will no longer get dismissed unless you specifically click with the left mouse button on an empty spot on the map. You can now probe and perform other actions without disturbing them.
- [Escape] can now cancel probes (for those without easy access to a right mouse button)
- now opens the info tab in the bottom HUD

Bugfixes:
- "Darkened" sector type should now work correctly in Endless