Adding forces and reactions.
Fixed camera and added a few reaction features. Not done yet.
Fixed intersection. Added actual reaction.

Changelog:
 1.Intersection:
  -Intersection has been fixed and optimized.
  -No longer checks only for the vertices.
  -No longer checks for itself.
 2.Reactor:
  -Timer.
  -After 250ms, it resumes its course.
  -That only happens in case an obstruction occurred.
  -By obstruction I mean intersection.
 3.Forces:
  -Although present, they are not used.
  -Speed is much more reliable for now.
  -You can, however, add forces and it'll work just fine.

Issues and Bugs:
 -Not that I know of.

TO DO:
 -Group ordenation based on each element's width and height.
 -Column group ordenation.