#20 Dialog and button atlases fix, relative size of buttons in dialogues

android/assets/atlases/button_atlas.pack

android/assets/atlases/button_atlas.png

android/assets/atlases/buttons_atlas.png

android/assets/atlases/dialog_atlas.pack

android/assets/atlases/dialog_atlas.pack~

android/assets/atlases/dialog_atlas.png

...c/cz/nic/tablexia/screen/halloffame/HallOfFameScreen.java

...rc/cz/nic/tablexia/util/ui/dialog/SingleButtonDialog.java

core/src/cz/nic/tablexia/util/ui/dialog/TablexiaDialog.java

core/src/cz/nic/tablexia/util/ui/dialog/TwoButtonDialog.java