Conflict Phase Framework Events

[jeremylarner]

These additions implement the missing framework events for the Conflict Phase.

Changed files:
conflicttracker.js: We need some way of tracking how many conflicts have been initiated or passed by a player. We can't count won, lost, or performed conflicts because when a conflict opportunity is passed it doesn't count as any of those.
conflictphase.js: I added the remaining framework steps once conflicts have been completed, and tidied up the current code a bit so the phase progresses through the conflict declaration steps. I also implemented a new way of changing players, as the conflict phase doesn't necessarily go back and forth from one player to the other (due to cards like e.g. Breakthrough)
player.js: I added functions and variables for tracking Imperial Favor