Sub Payment Functionality

[forslundscott]

League managers want to prevent players from subbing majority of seasons to avoid paying fee.

Going to add an indicator to show that shows how many times a player has subbed for a league (if not already registered on another team in that league). If one game away from needing to pay, add a yellow dollar sign, if need to pay add red dollar sign, and not allow them to add as sub until rostered on a team and fee paid, or added as registered sub with fee paid.