finish: refactoring, count points correctly, show place and ties, add 2 players 4 colors to highscore

2 players 4 colors: show only two lines, add up all points
place: show place, show the same place on tie (e.g. places 1, 1, 3, 4)
first criteria: points (more is better)
second criteria: stones left (less is better)
refactoring: move finish activity to own package
finish: don't animate place number, animate data from right to left
finish: use drawable for background, add drop shadows, add second layer for 2 player 4 color mode
statistics: fix crash on API < 11 because of unresolvable OnNavigationListener interface
lobby: use nice card background for player colors
jni: keep first submitted client name, ignore names in following requests
jni: support for MSG_REVOKE_PLAYER to revoke a previously assigned player
lobby: support for revoke and request players from within the lobby
lobby: recycle color adapter items