Train

Adjusted the balance of the Train minigame so that training by default takes several hours depending on the class being trained, and the speedup effect of player interaction depends on the level of the Train upgrade.

Selecting a hero to train should be a bit easier.

The Avatar class can now be trained and Avatars sent back to the dungeon. Their primary purpose is claiming dungeon territory. Claimed tiles display in green instead of the usual grey. Claimed tiles will not generate monsters normally. Avatars are still a work in progress, expect more from them in the next few weeks.