Updated endMenu
Merge branch 'John'
Added Highlighting & Removal of Removable pieces

- Movable pieces for current player's turn highlight.
- Clicking a movable piece highlights available move destinations.
- Clicking a highlighted move destination moves the piece and highlights
removable pieces.
- Clicking a removable piece removes it and all other pieces that should
be removed with it.

So, we almost have a functional game!
What we mainly need is a gameLogicLoop of sorts in Fanorona that keeps
track of the game logistics concerning:
1. resetting the timer when an extra move can be executed because of a
capture
2. special game rules (like holding an array of spots visited in a turn
since they can't be visited twice)
3. calling board.nextTurn() when appropriate
4. etc...
Merge remote-tracking branch 'origin/kodi' into elliott