Bug Fixes and small additions

Finally Finished exams so i am back to programming. For now I only fixed some small bugs plus i added an options button in the main menu so you can change background of the board. For now this is the 1.0 version of the game so i might just leave it at this, still i have some ideas for a major update next time hopefully i have the time to work on it ^^

Changes :

- Fixed a collision bug where the stones would not push each other when dragged close 

-Fixed an audio bugg where 2 music tracks would play on top of each other 

-Added an options menu where you can change the language after you entered

-Added the possibility to change the background of the game while playing