Fifth commit

Changelist 3/27/2014:
- Refactored writing to ActionLog to a function (done)
- Added maxConcentration to player; added increasing maxConcentration
when leveling up; adding refilling concentration to maxConcentration
when leveling up (done)
- Added knowledgeAmt attribute to EnemyType and implemented into
PlayerAttackEnemy; adjusted leveling up requirements and added Guru Sys
Admin level
- Add "dead" functionality (done)
- Add "restart" functionality (done)
- Game is "complete"; lacking major game balancing, no inventory or
items as such, no money.