Made a few changes to cosmetics - now should be enough to work on gameplay
Merge remote-tracking branch 'origin/master'

Conflicts:
	TetrisLibre.iml
	TetrisLibre/TetrisLibre-TetrisLibre.iml
	TetrisLibre/build.gradle
	TetrisLibre/src/main/res/drawable/blank.png
	TetrisLibre/src/main/res/drawable/s.png
	TetrisLibre/src/main/res/layout/game_main.xml
	gradle/wrapper/gradle-wrapper.properties