v0.0.4 update

v0.0.4 (11/3/2014)
- Implemented Challonge importing.
- Implemented GlickoMan importing.
- Linking an imported player to an existing one now adds that name to
the existing player's list of alt names.
- Added ability to set players visible or hidden from leaderboard in the
Modify tab.
- Added settings tab.
- Implemented last match date for player leaderboard.