Fix issues 146, 147, 148 and 151

- Add IGNITE hook to OEntitySmallFireball, fixes #146
- Change fireball explosion to status 7, add fire charge use number (6)
  to the javadoc, fixes #147
- Fix NullPointerException in /god command, closes #148
- Add static kit cooldown lists to Player and initialize the current
  lists using the new DefaultMap class, should fix #151, needs testing