Merge branch 'release/v0.6' into develop
necessary changes for export
icons work for export now, too
lost/won message now not shown in pause
added class SetGameModeButton
deleted old GoToX buttons with set game mode button
set file path to work in eclipse
made it not necessary to create game before game ist started
moved variable creation outside of for loop -> better startup time
added ability to check time taken by starting game
increased start performance a little bit
whitespace
settings now gets created when user clicks on settings

game start up time is now abou 1s shorte because the settings are not
created before the settings button is clicked for the first time
scores now also nut created until score button clicked once
cleanup
?
button Sounds now work again
in gameplay when a tower button is selected the others are deselected
cleanup
added lwjgl applet files