* Re-introduced mood based events for sadness and anger.

Fixes:

* Removed repetitive sound on item pickup.
* Wanderer locations no longer report dungeon rooms incorrectly.
* Health siphons now draw 100%.
* Travel events are re-activated.
* Hero recruitment levels balanced.
* Event chance increased in humanoid dungeons.
* Injuries cause anger if not attended.
* Starting bonus for heroes rebalanced.
* Heroes leaving due to boredom now report correctly.