Jatris 1.15 released

Released a new update for Jatris Free

The main new feature is the hint system.
Simply tap on the game status widget (the one with the multicolor arc :-))  to get a hint on the next move. A hint costs points or time (in timed game mode).

Added a second howto page with special jewels (white and black pearl) and hint howto.

Tap on game area when game is not started now switches between splash,highscore and howto pages.

Done some code cleanup and (little) memory save.