target API 19 (android 4.4)
game: count +15 points if played all stones, +20 if last stone was monomino
finish: simplified game finish activity layout
finish: show small (+15) and (+20) if all stones were placed or game perfect
about: improve layout for portrait
add statistics database and statistics activity to prefs
new gears icon for custom game button
finish: show statistics button in game finish activity
res: trivial fixup
statistics: menu button to clear highscores
stats: record flags in db (e.g. FLAG_IS_PERFECT)
statistics: improved statistics
stats: style updates for borderless button
stats: don't show "reset" in actionBar, it's too dangerous
game: fix racecondition when playing sounds while screen is rotated
stats: show good games and perfect games, remove redundant middle column
statistics: some translation updates
stats: use localized labels for statistics
stats: spinner for game mode added
stats: make statistics value small font