Merge pull request #46 from Eye-Static/andy

definition pop up
perpendicular word scoring.  all scoring now works.
Merge branch 'master' into zach
Merge pull request #47 from Eye-Static/zach

Zach
add support for passing on any turn
fix bugs related to passing and transition dialogue
play word button now says pass if you havent played a letter
Merge branch 'master' into andy