Camera, math and render updated.

  - changed head-file comments.
  - Added text rendering functions.
Camera:
  - Done camera module. (done rotations).
Math:
  - corrected vector mult.
  - separated math to modules 'vec', 'matr'
  - reoverlayed QString class functions creating with 'double' and 'int' numbers.
Rrmove *.pro.user* file
Remove *.pro.user* file
Merge remote-tracking branch 'origin/testing' into testing