Fixed an issue with rendering related to high objects

Made changes to the way cars work:
- When exiting the car, it doesn't just disappear anymore and can be driven again
- You need to actually look at the car now to enter it
- Added an infobox to show the button you need to press to enter a car

Added controller support, it's not perfect but it works.

Fixed some issues with public transport, updated UI to show some of the recent changes.

This is a big one:
-Finally fixed the UI boxes
-Reworked completely how the mod works - there's now actual physics
-Jumping is now a thing
-Third person now also exists - just scroll that mouse wheel backward!

Made the Freewalking button dragable

Possible fix for the UI issues

Fixed the updating

For some reason change notes don't work for me so I'll just do it this way:

06/03/2016: Added crude collisions - will refine later
07/03/2016: Refined the collisions so you can now stalk people in their backyards :)
09/03/2016: Added vehicle driving as well as vehicle collisions
10/03/2016: Added parked vehicle driving and collisions
10/03/2016: (Hopefully) fixed the UI to work better