Beta-6, new levels and bugs fixed!

-Changed the about screen a bit.
-Added a new level: Cairo City: Part 2.
-Changed the God Mode:
+There isn't cool delay to shoot with the camera.
-Revalanced all the level (now thery're a bit easier).
-Changed the size and hitboxes of all mobs.
-Changed the GUI of the Cairo City: Part 1, now display a blue key.
-Added the 4:3 resolution.
-Revalanced the jumping and falling speed of Jimmy.
-Changed a few translations.
-Fixed a lot of bugs:
+Fixed the bug displaying the FPS.
+You can't touch the platforms.
+The volumen and the sound doesn't work well.
-LOTS OF MADE-IN-CHECHU CHANGES!