Better support for high resolution devices

Worked a lot to reduce graphics problems on high resolution devices stated in the previous post.

Jatris was not designed to work with high resolution devices (it's native resolution is 480x800 or 480x854 with HDPI density ) so it is not possible to optimize it for such devices without graphics redesign (mainly resize).

Anyway it can run a lot better than the current version :-)

The current version supports these resolutions :

LDPI 240x320, 240x400, 240x432
MDPI 320x480
HDPI 480x640, 480x800, 480x854

Upcoming version improved support for resolutions :

MDPI 480x640,540x960,600x1024

These modes represent the worst case scenario for Jatris, as the MDPI density lead to a shrink in all bitmaps; the game area is smaller than the optimal one
(in 600x1024 a lot smaller).

HDPI 540x960,600x1024

 These modes are fully playable even if the game area is a bit smaller than the optimal.

HDPI 720x1280,800x1280

Jatris can be played on devices with modes but the user experience is not guaranteed.

Checking if an HD version can be done without recoding the game.

Here the pictures of the improvements in MDPI modes

Left   : current version (1.32)
Mid   : first attempt
Right : upcoming version (maybe 1.4)